don't get it! Help!

[kissak]

Okay, My WAH has me so confused. He calls me this morning and says "Morning" ok, then he asks if I called to see about the child support payment and when I should receive it. We talked about that a min. and then I asked how he was doing. He said "good". Then we talked a while about his work and stuff, then somehow we got off on the subject of the other woman and how I would appreciate it if she weren't around kids when he had them. He understood and agreed to a point. He said that if he continues dating her in the future he would like us to sit down and talk and be friends. I said "i don't think so" I told him I never really liked her and that I was being honest and I did not want him to get hurt by her. I was being his friend by saying that. We continued talking about our R. We talked about 20 min. he even asked if I had been going out on weekends and going to clubs and places. I know he didn't really want to know if I meet anyone, he just wanted to know if I had loosened up any. That seems to be his problem with me. He could never go out and have fun with me. But honestly he never tried much. His favorite past time seemed to be watching tv. I did tell him that I thought him trying to build our house was a way for him to find happiness. He said I was partially right. He said he thought if he could make me happy, I would make him happy. But when I dare tell him I miss him, he says he only misses the kids and not me, but after we talked and said good bye, about 30 min. later he texted me to say, He will always listen, and then text me to say that I couldn't have a nicer cell phone than him, we had talked about me earlier getting a new cell phone and he couldn't untill Aug. I know he was joking with me, but I feel so lost about things when he plays with me like this. We then texted a half dozen more times about silly stuff. Playing around. He did tell me in conversation earlier today that he had been thinking about what if he did come back, and that he didn't want it to seem that he was just brushing it all aside. I am just afraid that the longer he dates this other woman that he will get closer and attached to her and won't think any more about me.What can I do? He seems to be telling me what he wants to see in me, or what changes. I.... Help! PLease! Need Advice!!!!!!!!!!!!!!