Now - the next thing. This is why it's IMPERATIVE that the person you date/marry is your FRIEND. And not just some BS word people throw around. The TITLE "hubby/wife/gf/bf" means jack. But you HAVE to have something to fall back on in relationships - and that is a FRIENDSHIP. Any man will cheat on some "bitch" (no offense) who is JUST his "gf" or his "wife" - wooopty fuckin doo. But a man would not want to hurt his "friend" (a TRUE friend). Any woman will cheat on some idiot "husband" - these terms are something we created for the peope OUTSIDE of the relationship - not for the 2 people IN the relationship. You're not IN LOVE w/ some1 te day before you get married, and then love them a "little bit more" after you get married. Titles mean nothing... but if there is a friendship there, then that is REAL.
There is room to still be friends after all this, or build a friendship - however, she was not feeling any guilt (it seems) - so odds are, you'd be building a friendship for the sake of sharing a child - and that's worth it. Once some1 shows you their true colors, BELIEVE THEM THE FIRST TIME. I do not backtrack... you're just one woman out of every other woman on the planet.
Best wishes homie.