9 months ago
Last edited at 8:11AM on 7/6/2013
Depends on exactly what type of relationship you are talking about and your intentions about approaching "the girlfriend"at all in terms of what is "wrong" with this picture.
If you are having a romantic relationship with someone else's boyfriend ... Then THAT in itself is wrong ... If you approached her to expose your relationship to the girlfriend in attempt to expose that he is cheating on her, with you and you intend to "claim" him as the "prize" ... Then, again THAT is wrong.
If your friend's girlfriend asked you about it, then you were not wrong. If you told her out of nowhere then definitely that would have raise some questions. The girl might think you want to make her jealous or something and of course she won't be lenient with her boyfriend about this issue.