maybe i'm very emotionally and sexually immature, but i simply could not deal with being cheated on. it tore me up inside, over and over again; i simply wasn't able to deal with it.
i never tried to tell her what to do. remotely. i made no attempt to interfere with her decision making, and fully respected her bodily autonomy.
but, i had to get up and walk out because it was just ripping me apart, and the fact that my decision was final was very much centered in the fact that i never wanted to feel like that ever again.