Wow, SBR, I can't believe your H's actions! How could he post that on FB? I actually know the answer: he's blinded to reality and rationalizing his actions. In his head, he's not married anymore. Know that you're not alone.
You said, "I'm not even sure if I'd be able to trust someone in a relationship." You've had two huge disappointments in a short time period. Give yourself time to heal--as much as you need.
Re: filing. If you're ready, then do it, but make sure you're really ready. Your H could still "wake up" but you might need to wait a long time for that to happen. Ask yourself if you have the strength to be patient.
