Advise?

Me and my very recent ex of 4 years don't know what to do. When we were dating he said some pretty nasty things to me and hurt me so much for so long, swore they were the truth, we argued about them a the time.

He watched me in pain over the words he told.me for so long and didnt do anything to fix it. Even though I had told him what to do fix it, ie showing me that he cares, or loves me, or apologizing for his words. Wasn't until 2 weeks before Christmas he told me all the hurtful things he made me believe was all a lie. And he still didn't seem to want to show me that he cares or was apologetic over the past.

We decided to break up for a month just to clear our heads for a little bit. It was 2 weeks no contact at all until we talked last night. We talked about how we felt for one another. I explained to him that we should both change to continue the relationship and he agreed. I told him I would try if he would, I would change my faults, if he would change his.

I want him back now, or at the end of the month. But I don't want to wait for him after that due to the fear of him saying he'll change then not changing. He wants to take more time after the month is over to be independent for a while for the both of us then come back to the relationship. But I don't want that cause I don't trust him or that he'll actually change. Idk what to do.