>>1102883 OP, you seen to be getting cucked passively. Let me tell you why you should dump her immediately:
When someone commits to a relationship they create one of the most powerful, most old, yet most beautiful bonds ever know to mankind. They commit to share their lives with another person, their problems and solutions, their defeats and their victories, both in the physical meaning as well as in the spiritual, philosophical one. Of course, for such a partnership occur you must have a immense amount of trust in the other person. So, when one of the two cheats (in this case, her), they break this trust, showing not only their lack of commitment, but also disrespect for you, your trust, your commitment, and everything you ever meant to her and what she meant to you. It's probably one of the biggest metaphorical middle-fingers you could ever give to someone. The dick entering the vagina is only the tip of the ice-berg here.
And so, because this person clearly has no respect for the relationship, it's clear that they will not only cheat again, but progressively use you and abuse your bond, until the value of this relation to her becomes so low that she will dump you at the most ordinary problem.
By accepting this cuckery passively, you are disrespecting yourself, and showing that you're not a man, or even human, but only a "thing" with no value that can be used as others see fit. You will be even worse than those fucks that get cucked by a fetish thing or those that think that "open relationships" are good, because they, at least, set a parameter to never fully commit, or break the commitment under certain circumstances.
So, for the good of civilization itself, and for your own good, dump this cum-dumpster cheating cunt.