Wow.
You just dodged a bullet (cannonball, actually), and you want to know what to do? Go celebrate! 😀
Your fiance was scum, and the relationship is over. Congratulations! Get my book, Think & Date Like A Man, and read it. Start being a woman who values herself, and knows and allows herself to deserve a wonderful man who doesn’t need or want to cheat on her. Don’t settle for less!
It’s amazing to me that you want to know if you should feel bad! You’re really out of touch with what a good relationship looks like, so I suggest you venture outside your normal circle of family and friends and start looking at relationships that seem good to you, and ask yourself why they seem good. Learn what real love looks like, and then go get it.
That you’ve never heard anything else from your ex-fiance is great news. Keep it that way. The next wonderful chapter of your life starts NOW! 😉