i really do need everyones help on this one

okay...so my first loves cousin came to my house on thursday and we were talking, remembering the good old times when i was with him. me nad him were together for a couple of months and we were soooo in love. he broke up with me and i was shattered!! one day i saw him at a party told him i missed him and loved him, and his couzin gave him a letter were i told him every single feeling i still felt for him. he called me and we got back together less than a week later. unfortunately we got back at the wrong time, becuz he had too much drama. so when his couzin came over she ended up telling me that he found out i had a new boyfriend and he was really mad. she said every girlfriend he has had since our break-up has been for two weeks tops, so she thinks he still misses me. i really have no clue what to do because i really love this guy still o matter what happened. i think we both know we're supposed to live the rest of our lives together, we just want to wait until the time is right. i do have my boyfriend but i am not in love with him, i just got with him a lil bit ago. i have no clue what i should do....can ya'll plz help me i'd really appreciate it!!