the beginning of something beautiful

i really need to vent right now. so since October of this year, I've been talking to someone, and at the beginning of this friendship. he told me that he didn't want a relationship at that point in time. mainly because he has been hurt, which is totally understandable. i didn't want a relationship either was going through a breakup at that time, and didn't know if i was going to be able to trust again. honestly didn't think that it was going to be anything except friends with benefits. but things between us have changed and he told me today that he really does want to be with me. but he came and spent time with me and he just left. i obviously like him just as much as he likes me but i still am scared that he is going to break my heart. Am i just overthinking this? and to be perfectly honest i wasn't expecting this to happen, it just kinda happened,