My partner and i have been dating for about 13 months. Im bi-sexual, and our relationship is open- we can sleep with anyone we like so long as we dont trade each other in. Recently, hes found a girl hed like to sleep with, which is fine except that shes getting a little too close to him. She tells people hes close enough to being hers, and he has lately been telling people he has two girlfriends. This was not part of the agreement, also he spends a lot more time with her than he does with me. We arent very touchy-feely, but he and her are and im worried that its gone past just being a physical attraction. He also says the only things stopping him dating her is me and his family (they know her and there is bad air there). I dont know how to tell him that i cant handle him saying things like that, and i want to know exactly how he feels about her, but i dont know how to ask. i feel so betrayed and hurt. Im also currently 31 wks pregnant. What do i do, and how do i talk to him about this?