Better than what? He's a cheat. Sorry, am being blunt and probably unfair, but I find it hard to forgive cheats.

I would, like Leed said, find out why he did it. I think I would've felt better if he'd told you himself straight away, and certainly not lied to cover it up when it first came to light. As for forgiveness, that's really up to you, its not a decision anyone can make for you. Listen to your gut feelings? I find they are rarely wrong.

Hugs to you, and am so sorry that you're going through this. So very hard.