How does this situation sound to you?Please read?

I have a funny feeling about someone I'm sort of involved with.Well first off, he lives in the same apartment building as his childs mother, and the weird thing is that the apartment she stays in has his name listed.He says hes moving,and he stays upstairs to keep an eye on his son, since she is a unresponsible parent.Second, he asks me to never "pop" up over to his apartment building.The other day we were suppossed to meet up, and I told him I was by his house, and he actually got upset, because he thought I was trying to "pop" up.Third, he never spends the night, if were intimate, its like right after he leaves, which I come to find embarrasing. Fourth, alo of the time when i call, he does not answer, he will only text, and if his phone does ring, it never goes to voicemail, I think its weird, but maybe I'm just paranoid, Iguess.Fourth,I asked him were was his son playing basketball because I wanted to come to one of the games, and he says no because his baby mother will be there and shes"crazy", so he refused to tell me.So I dont know if I'm like an embarrment to him, or if its something else...what do you think?Now on the flip side, on his facebook page he has single, i never see pictures of him and his childs mother togehter, so what gives, am I ugly or something..lol