Absolutely Frustrating!

This is ridiculous! Yesterday he says ok if you don't want me then tell me you are letting me go. I said ok you are free. We text and talked a couple times. He was calm and stated if I need anything to let him know. He also said if I am going to do custody or child support to discuss it with him and we can come to an agreement - whoa, that is unexpected but cool. It will make things a lot easier. Then today when I talked to him I told him I have things to do. But when I don't answer his calls or text right away he gets mad! As if I have all the time in the world to just bullshit with him. I have two kids to take care of and things to get done, damn it. The problem is once he is on the phone I can't get him off. I will tell him 5+ times that I have to go for what ever reason and he will be like "ok . . but" and then start a new conversation. What he promises will be a 5 minute conversation ends up a 2 hour discussion. Ugh, So Freakn' Frustrating!! Just when he calms down I think "ok maybe I over reacted, maybe I should go and try to work it out" but then when he gets like this and pissed off telling me he is going to call child services and the authorities on me then I remember why I don't want to go back to him. After fighting most of the day then you going to tell me you love me, lets get married. Are you out of your mind?! I don't need this drama. I rather stay with my family where me and my children can grow in a positive atmosphere.