I am so confused and indecisive?

So ,after breaking up with my bf for 3years, I decided not to talk to him at all because he hurted me talking about other girls, and saying he still wants to be friends with me and stuff. I saw no point of doing that since I still loved him and thought of course I can't handle him talking to other girls. ANYWAYS, he called me yesterday, saying he wants to be with me again and everything he said to hurt me was because he was also hurt really bad. But, how he said things to me about girls and moving on really hurt me bad. Now that he wants to come back to me, I don't know what to say. I told him we need more time apart and see what happens. And as of now, I don't even see this relationship working. But he said it will and he really loves me and can't let me go. I know he is really sincere about this but somehow I don't feel it. Its like Jennifer Aniston in Breakup movie. I don't know what to do. I love him but I am confused.