Self indulgent, attention seeking bullshit. To be quite honest, if, in real life, you are anything like you are on this forum, then the real question is why did she cheat on you rather than cut you throat in your sleep after the first date?.
Also, Cheating basically means you love/like your girlfriend but you wanna enjoy thrill of a different girl at a point in time, aint really as evil as they make it sound
I'd enjoy her mothers love hole whilst she's out cold. then move onto her gold fish bowl! Sure, bring the pinapple and skipping rope