I'm sorry to hear that. I've been in situations like that, where you can't stop regretting your decisions, even when you find yourself in a better/happy place again. I'm sure you've been over and over it, and that you have plenty of people there to listen if you feel like talking, but if you ever need one more, feel free to message me.

Regarding the mutual beta-ing... I don't know... It could be a good. ...Or maybe not. ;)