Financial talk

My boyfriend and I have been dating for 2 1/2 years now. We have two kids together and I mean life can get a little stressful. He has a job he doesn't life, we are still young and he doesn't go out much and we don't have alot of money. He was writing to a female friend of his on myspace the other day and asked if there was something wrong with him. He said he thought there might be because he is unhappy with where he is at and kinda likes someone else. Is it normal to have doubts like that or does it mean that we are over? I have never had doubts, so I was wondering if this is normal or does that mean that he is out of love with me. He still says I love you, kisses me and everything. Nothing has changed in our relationship. He has just started talking to these girls from high school again and then he said this. He has had commitment issues throughout our relationship. Does it have something to do with that? Is this normal? I don't want to include everything of why we have two kids already. I was just trying to make a point of the stresses. he is from a divorced family. His mother and father divorced because his dad cheated. Then his dad cheated on his second wife and now is cheating on his current one. Both parents have been married twice over. I come from the family with my parents together since they were 15.