Snoopie, this is a terrible situation to be in. Sometimes it is better not knowing things but there are things you really need to know. In this case, I think you really need to know that your BF will easily lie to you. His past is bad enough, but it is in the past and nobody can change it. Telling lies on the other hand can become a way of life. My philosophy has always been that I can't believe anything someone tells me once I know they lie.

You have to decide if you can accept the fact that he lied to you and may lie again. If you can, forgive him, stay together and good luck. If you cannot, pack your bags and go.

His relationship with this family sounds pretty unhealthy. He may agree to not deal with them again but they have already influenced his behavior and thinking. If you truely love him and want to forgive him counseling my help. I somehow think a relationship is very fragile if you need counesling when you are dating but the decision is yours. Good luck and God bless whatever you do. Let us know what happens.