Tracy Jeffreys in Montana here....?

I recently found out that my boyfriend of eight years has 3 children by 2 different women. He says they hate him and do not want anything to do with him. We have lived together for eight years and I think it's time to get married but he says he likes our situation the way it is. I also just found out that he has a Facebook account in which he doesn't list me as his girlfriend or fiancee. In fact, he doesn't list having a girlfriend at all. Should I be upset with this?