Need advice on love

Let me start from the start.
I went for an exchange student program for 9 days in hong kong. And there were other exchange students too from japan.
1- So the first day i didn't really noticed her aka R at all.

2- went for a factory visit and i noticed R that she was alone without any friends. So i went and talked to her and sure enough we clicked quite well. Talking about general stuff like what we did back home. I wanted to sit beside her for dinner but a host student from hong kong sat beside her and they started to chit chat. Sure enough they got along pretty well. She gave me her email on that day if i were to ever took photos of her i would send her since i was a camera guy with a dslr.

3- we went for some workshop and R was with That hong kong host kid( lets just call him fish). They mould the clay together like kinda making a vase. So i was looking at other stuff and at night we were taking a boat ride i was talking to other japanese girls and one of them aka S was kind of interested in me until i found out she has a boyfriend. She gave me so many subtle signs like turning her back giving me a wink and all that.

4- again i wasn't into any of them except for R. So we went to skytower and sure enough again she hung out with fish again. Nothing much on day 4.

5- suppose to be grouped in a project to do a group project on robots. Sadly i wasn't grouped with her. She was grouped with a good friend of my. Surely enough i talked to her little by little. Fish guy brought her out to see hong kong around that night with other japanese student.

6- i told my friend to watch if she is staring at me and yeah she kinda does. She would look at me and when my friend saw, she would pretend to look away or she would be in a gaze. She came to my table because we were watching some dance videos on youtube and she was kinda interested.
during the night, i got a chance to talk to her as we were being brought along the city to go shopping. While i was talking to her i just knew that this girl was different than the others. Our eyes met and we talking as though no one else was in the room. It was super brief. Maybe about an hour. But i got a lot on about her. From that moment i could feel a spark intensify.

7- she told me later that night, fish is gonna bring them out for shopping again. I went with the other group to take photos hong kong and it was one of the best nights ever.

8- so we are having a farewell dinner and fish guy was invited. During the farewell dinner, she sat beside fish. I sat opposite her at a round table. While we were eating, fish guy kept on flirting with her. Sure i was pissed but i couldn't give a damn. My friend who was grouped with her sat beside me and observed her and he told me that she was looking at me when i wasn't looking at her. So long story short on the way back i talked to her a little more and again our eyes met and we talked for a brief 15 mins about how things sucked being a foreigner and sure we cracked some jokes here and there.

9- went to a amusement park. Lost my ticket and i had to buy one again. She lost her bus card. What a coincidence on the same day hahahaha. At the park, fish guy wasn't around so i took her out the whole day walking around and talking. We sang our fav songs in acapella and also talked on about everything. Again! Our eyes met and i couldn't stop staring in her eyes. It's like i've seen through her soul. I was a gentlemen the whole day. Helping her carry her umbrella when it was drizzling, bought for her a gift at the souvenir shop cause she really liked the jellyfish plushy, didn't use any profanity and even scold a friend for using foul language in front of her. Though we were tagged along by a friend who was cock blocking me cause he's just an idiot who doesn't see that someone is trying to impress a girl. That night, she went shopping with fish guy with there other japanese students. I went to shop on my own.

10- last day didn't talk much to her cause when i sent her the photos through email, she didn't reply me back. What a bummer... Long story short before we parted ways i asked for her phone number and she gave it to me. She told me i was the nicest guy she ever met so i was all good. She told me that we should video chat sometimes and i agreed to that.

As of now. I texted her if she's back in japan and she said she was and told me that was going to watch a movie. She told me the movie was good and she really loved it and it almost made her cry. So i asked her if i should watch it since it was a new movie and i am notorious for crying when i watch a sad movie. The conversation ended there. She read it but didn't even bother to reply me.

I have a strong feeling that she like fish guy. And i'm bothering her too much. Imm not much of a looker but people have complemented me on being cute. So what should i do? We are two worlds apart and it's been 2 days and imm already missing her. Should i text her where it was left off? She doesn't seem to reply to my text which pisses me off but quick to reply to fish guy. Should i just forget about her? It's hard cause my eye met a soul so beautiful that i have a to have her in my arms.
Just an update, i asked her again and she told me she forgot to reply. Yeah we texted alittle and i asked her if she wants to trade music choices. I sent her a link on youtube of a ed sheeran song. It has been 4-5 hours since she saw my message cause the messenger shows that she read it but she didn't reply me.
Please feel free to read and advice! Thanks