How should i talk about it?

So I've been really insecure..

My boyfriend/father of my baby seems to be way to conserned of what his sons mother is doing.

For example.. I'm watching his son today while they both are working and he wants me to check her journal. Because last time he did she was saying she regretted ever meeting my boyfriend. But she doesn't regret her son..

Witch turned him on the subject of telling me while I'm 21 weeks prego (at the time) with his daughter that he really did love her and he doesn't understand why she broke up with him and blah blah blah..

It sent me into really bad depression for 3 days. Then I got over it.. But every time he talks about her I just get more and more insecure. Like if I didn't get pregnant we wouldn't be together still and hed probably try to get back with her.

He says he loves me very much. But is that really enough? Love is just a feeling to some people.

I'm a good girlfriend. I clean. Make food. Let him play video games all day. Take care of his son while his friends come over for hours to smoke. Take care of his son while he plays video games. And I really Dont mind how our days go. I love seeing him happy. And I'm happy. Expect when he talks about her. Or anything to do with her. He said he just wants to know what goes on around his son. Witch is totally understandable. But when he's not with her. He still trips on what she's doing...

What do I do??? :'( I can't handle 2 kids and be depressed.. Its to hard