Most Helpful Guy
so if he cheated on u wid a more attractive gal would u feel better u wanna say?
anyway i believe cheatin has nothing to do wid who do u cheat yer bf/gf... action's da same.
also maybe HE might be findin her attractive... maybe this is da type of gals he likes
Most Helpful Girl
Some men just like trashy women. I'll never understand it. Probably a sexual thing. But it's true. They tend to be more aggressive, showy, and what not. Men also tend to sometimes cheat with a woman very different from their SO.. Especially if they have been together for a long time. They want to see if they are missing out on the opposite side of the spectrum.
This woman was probably meant to be a fling but once she realized how "responsible and good" your guy was she clung on for dear life and did whatever she could to get inbetween you. She probably sees him as a ticket to a better life.
You two also got together very young, were buying a house.. There was a part of him that probably thought "gee my life is over and I've really only been with one girl". It probably freaked him out. A house is a huge commitment and he probably saw the girl as his last chance to live wildly, play the field, and do something different.
I'm sorry this happened. It's just awful. But it's more common than you think.