Threeesomee idunno if I should?

My husband n I wer together for 6 months then I moved in with him for 6 months then we got married well he's very private about his past such as x"s he doesn't tell me nun about them at all I ask n ask. So I snipped around n I found out the names of his x's n I facebooked them n one of them is still tryna talk to him she calls him but he doesn't talk to her. She's the one calling walking by our house she lives 2 streets down from us so anyways I was thinkin about having a 3 some w her since she's not over him we been wanting to have a 3 sum but it's hard to find a girl that's down w that I just want to kno if il have problems after the 3 sum happens such *** me having to kick her *** for not getting the point of leaving my husband alone n stuff