I have been in relationship with my girlfriend over a year. In the initially months for our relationship, she used to fuck a black stud whenever I am out of town. I was unaware of it then but was informed by the dude who was using her and she agreed to it when I asked about it after a lot of drama. A few more months in to relationship, when I asked her if she would love to have a threesome, she refused saying she doesn't like such type of stuff. Last week we had a war of words and now the relation is a bit sour again. When I logged in on her fb ( she had given me her password long time back), I noticed that she has started contacting that black dude again and had given him her number. I am sure he will be using her sometime this week or over the weekend. What I don't get is why does she refuses to do a threesome or cuckold but doesn't have any problem in doing it behind my back ?