Been dating this guy for about 3 months now... what is his deal.? Please help..!!?

[Ruby]

oh dear, this doesn't sound like a happy couple story.
he certainly has got feelings for this other woman, despite whatever marital status she has at the moment, he is not over her. and it doesn't look that he will be anytime soon. it might take years and then again - she doesn't care about cheating on her husband. which can only describe both of them as selfish people who only care about themselves and never think how much they hurt those around them.

whatever he tells you - he can't be trusted. he already broke your trust so many times in just 3 months. believe me you don't want to be a rebound figure for him. I am sure you deserve so much better than this. just leave them alone. never get back to the guy.