Boyfriend issues.

I have a boyfriend that I've known since high school, we used to be high school sweet hearts. I recently started dating him again and now i feel like I need to just do things myself. I'm scared of hurting him because I know he really does care for me. He even kept my daughter's sono (even though he knew she wasn't his) all these years (7 years) on his night stand in a box. I feel like a horrible person, and I have no clue what to do. Not to mention I'm still in love with someone else who I know we won't be together. Such mixed emotions right now. I've always put my eggs in someone else basket and j feel a strong urge to just put them in my own. But I'm order to do that knave to hurt someone else because I don't want to be helped by someone else (him as my significant other) please help me!