Would you tell him/or her what you know because you hate to see someone you care about being cheated on and possibly publicly embarrassed and humiliated
Would you keep your mouth shut, fearing that it wouldn't end up going well and you might end up losing a lifetime friendship?
My advice to this person is to stay out of the friend's relationship. It seems to me it can only create too many unforseen problems.
Agree or disagree? Honestly I could be talked into going either way. Not a pleasant spot to find yourself in.
Give your opinion. http://on.fb.me/1emnacj