very true, i was just kidden… heres my stance…im guessing you cheated on her inthe 1st place? which is now why you are an ex of her. Basiclly i have no remorse for anyone who has cheated on thier g/f,b/f. If your going to waste your time in a relationship, be fuckin faithful and respectful.
As for this hypothetical case, its never nice to be a cockblock, but then agian, how much respect do you have for this girl, if its a lot then, make it known whats going on, but if your doing it soley to fuck the other guy over… then don’t waste your time.