What would u do if someone promised to be with you again?

Okay so i ended up meeting this guy who i had a huge crush on someone i wanted really bad and after the semester ended for our class he asked me for my number would text me and started to say how he liked me and stuff.then we started going out and he was very romantic and i was his first girlfriend after his mom died amd he would tell me how special i was that he doesnt just go for anyone,he was such a gentlemen nice polite respectful guy and one day we were going to class and he said k goodbye i love i was stunned i couldnt believe he said it when we werent together for that long. Than he imeediately freaked and said oh my god im sorry i thought i was with my mom.i totally believed him but the night i admitted i was falling for him he told me how thats how he felt and it just came out he couldnt help it he was like im in love with you.so as we got stronger from and more in love.he called me one day crying saying how he had to move away in four months.but we didnt break up we staye together till then and although we were shorted time we cherished every moment he would tell evryone how he loved me alot and one day he says im going to get u a promise ring and promise u that one day ill have u back no matter if its months our years from now were going to be something again.so we got each other promise rings with our dates on them an when i gave it to him first he showed it off to everyone and was like i honestly loves this girl.it was an intense love and very deep he would say deep things and then a couple days before he left he went on a trip and i went to his graduation an the day before we were in his room and he started crying so then i did and he started saying how much he loved me and if he died tomorow hed be fufilled because he found a love like ours and a girl like me then he started saying that he already lost his mom and now hes losing me an we cried and said how well always love each other we had to leave bexause i had to be home and i told him how my mom wanted to say goodbye and he started crying then my mom was crying and he was tellling my mom and sisters how much he loved me and that hed be back for me. unfortunately *my bday was the next day when we had to break up and he was going on a trip before he moved and he took me to dinner and got me my promise ring and a necklace and this blanket that i used to always lay with at his and we saw a movie at the dinner he wa like ill always love u always i have to get u back and then once we were saying goodbye it took us two hours we were crying outside my house for two hours and he was like this isnt goodbye forever and grabbed my hand and putt it on his heart and said this is yours protect it and then i finally went inside to cry for hours then the next morning my sister surprised me with flowers balloons and more gifts they were from him he made me a picutre album of us and at the top it was the bottom line is and then its the pictures and the last one says im nothing without u also he made a huge frame of his two fav pics of us and its pretty big.my sister said after he left saying goodbye to me he called her and met up with her and was crying to her telling her how he really loves me and he wanted to surprise me with those things he made.after he left he still came down and visited and would still text me and act like we were together then he started to say u probably hang with guys like tell me that its jus us two no one else but we also agreed we see whoever cause if we couldnt be something now then maybe later.he would tell me he wanted me to have relationships so i could learn n experience from them and that when hed be back we could have more of a mature relationship.then he started getting into raves and partying and drugs alot and stopped talking to me and would text me once in awhile onc he told me drugs changed him forthe good after that we didbt tAlk much i had always been friends with his friends before we were together so id always hang with them n see them then one day he got a girlfriend put it and made sure i saw that he was with someone new.i was devistated and heart broken he had sent me a text but i knew not to reply smart not to and he end up textig my sister telling her i will always love ur sister im just doing whats right now i want her to live her life and ill be back.it just angered me so i went to my first rave and he went knowing that i was going i spotted him out and he ddnt come with his girl byself i saw him looking for me and he asked how i was and i said im good how r u and hes like alright my fanily thibks im a druggie and im still sad over my mom and i was like u should be fine u have a gf and he said its not like that and that he still has feelings for me but i tried not to let that get to me cause he was with that girl.then i didnt see him and i would hear things about how he was always with his gf or doing acid alot and living with her.i actually started dating one of his not good friend but one of his friends and i told myself to jus let it go if fate decides we should be together then we will.then i went on a trip and i told myself to just let him go and i had no service when i got back and had service he was addig me on facebook i was afraid to see pics of him n his gf but i was quick to find out they broke up he moved to live with his friend wwhich is back close to where he used to live by me and he had made te facebook and i was one of the first people he adds out of the people he wants to add me.then my sister met up with him one day and he was asking how was and what grade i was in and he couldnt believe that it had already been a year and couple months that hed hadnt seen me.and he started saying how i knew good music and stuff like he remebered that wow.then my sister had a party and he came the first time ive seen him since and out of the people there he saw me walked through the crowd gave me a hugg for awhile rubbed my back and said its so good to see u and was bringing up stuff from our relationship inthe past and i knew we have that feeling everytime were around each other because we didnt break up on bad terms he had to move and thats the only reason.then i hung out with him another time after but he wouldstill put up pics of him n his ex on facebookfor like 5 mins then take it off then i found out she got a new bf and ended up being pregnant.but on facebook something said of him being around her but hes an idiot if hes still talking to her but then this one time i saw him it was rainging we went drifting i hate it so i got out of the car and my friend was still in the car with them my friend said watch for me dnt hit her and then my friend said that he said to his friend watch out for her ok dont hit it her and he kinda got near me but not to close and my friend said he smaked his friend and said im not ****ing kidding dont get near her.my friend my shocked by how worried he was and she was like i know he sill loves u but i didnt know.we would talk through friends comments or pictures on our friends facebook but nver on each others.i was still datig his friend but i would see the comments he wrote about how his life needs to pick up and somehing happend between him n his ex that they stopped talking.later i found out that they were gunna get back together but she ended up getting a new bf karma just like what he did to me but then she ended up being pregnant with her new bfs baby!!ive always known hes been depressed about his mom and ha issues with that and i kida just figured he always needs someone in his life cause he has nothing so i respected even when he got a new gf.although i was rather happy to hear about there break up i still felt bad cause i wish the best for him my heart always has a place for him.then he wrote on my picture looking older,and he would ask his friends who are good friends of mine too how i was and that im looking older and stuff and what guy does that u know.and then iran into him and he gave me along hug and said its good to see u and i got butterflies he asked me how i was and what ive been up too nervous me i pushed my hair back and when we were together i had only two ear peircings and when i pushed my hair back he said wow u have three piercings now an me since ive had it since after we werent together i said ive always had three and hes like no i always remembered u had two i couldnt believee he remembered something as small as that.then how could he forget about everything that happened between us.then my gpa ha cancer i sent him a message saying how hes such a good person that hes strong my family is so sad because of it and he lost his mom i cant imagine how he felt so i told him he deserved the world and that good thigs were gunna come for him.he wrote back saying that what i said was one of the best things hes ever heard and that he really appreciates it and and that hed prayfor my family and to stay strong but we havent talked since and through facebook he still might be seeing his ex i dont know.a part of me has moved on and apart of me will always love him. But i would like some advice on what to do should i not hope for us to get back together?should i just let it go?its hard *but idk obviously im not goingto stop myself from being with anyone but ill always love hima dn i wonder if he still loves me and will want to be with me but at the sametime i cant let that be what i live by i still do me and live my life but when i see him i always fall back what should i do!?!?!