<human>: So, I have been dating this guy for over 6 years.  He is 29 and I am 25.  We are both openly bisexual and have been for the duration of the relationship.  He claims he likes to look at other men and is sexually aroused by them but does not like to be in relationships with them because they don't understand him like women do, as he is a bit feminine.  We recently had a baby together and, though we have always had different sex drives, it has gone from not enough to pretty much nothing.  
I know that the new baby is a factor, but I am concerned it could be more than that.  He comes from a very religious family who believe that homosexuality is wrong and gays go to hell.  His mother also has put a lot of pressure on him to get serious with a woman and start a family.  Since having the baby he has seemed extremely disinterested in me sexually and has been talking a lot about the guys from work.  He has also been staying late a lot and getting home at odd times.  
I am worried that, now that he has a child, he feels like he has fulfilled his mother's wishes and can start thinking more about what will make him happy.  I have tried talking to him about it, and he always says that no one could understand him like I do and he wants to be with me.  That's great and all, but it doesn't rule out the possibility that he does not find me sexually attractive b/c he prefers men.  
He is always worrying that I am going to go back to my mother's house and not let him see his daughter.  Having grown up w/o a father myself, I would NEVER do that to my own daughter.  I love him very much, but I am miserable and feel unwanted and I can't stay in a relationship that is a lie.  Is there a way to get to him to open up about this and be able to tell if he is not lying?

Give me the gist of the text in a nutshell
<bot>: How do I tell if my bf is lying about not wanting to be with another man instead of me now that he has fulfilled his familial obligation of having a child?