i dont know wat to do

Hi im new here, i dnt know wat to do ryt now. I had a bf wen i was in highschool, i cud say dat out of my ex's, he really do know me better and for me he was the perfect guy but we broke up. Anyway, i had a bf ryt now and we already had a son but wer not married yet and i know sumday we nid to get married bcoz we already had a son and i dnt want my son to grow w/o his father but unfortunately i know in myself dat im not dat inlove with him compare to my ex which i mention b4. My ex is still inlove with me i know dats the truth, and i know in myself dat i, too had a feelings for him. So wat shud i do? Give him a chance, leave the father of my child or i will do nothing about it? I really really nid an advice, please help me...