WHAT IS HE UP TO ,IS THIS ALL A GAME?

we been only going out with him for 7 month now and all hes telling me is if u don't trust me then i cant deal with this any more (me arguing with him)before me he was deal with his baby mother they was never in a relationship.when i moved in with him she felt some type of way and started complaining AND arguing about how much she love him want to be with him,and if the girl hes living r we going out . so that got on his nerves and he told her TO NOT SPEAK WITH ME UNLESS ITS ABOUT OUR CHILD.that didn't last. all of a sudden she decide to become a Christan she told him about it and started conversation. which lead into friendship she stared asking questions say did we do anything together he said yes so she hung up the phone on him he told me he answered her because he didn't want to hurt her feeling and that she might take his baby away so now they r friends on face book. we keep arguing about that fact and all hes telling me that i have to trust me i see how he doest gives a **** about my feeling Cu's if he did he would be speaking to this girl hes holding on.hes also talking to some girl in texas what is the reason for what hes doing??