I'm right there with Autumnal Tone, Boring Guy, and SkylerSquirrel.
You may still love her now, but she has shown herself to be a cheater and liar. After a few years of living like this, chances are high you won't love her so much anymore.
I'm divorced due to cheating and lies. It led me to an infidelity board, at which I have spent a great deal of time over the last seven years. While it was very healing for me, it has also given me enough reading on stories just like yours to know that chances are astronomically high that a few years down the road, you'll still be finding out about new lies and more affairs. I see it on the boards over and over, and no amount of counseling helps, because generally people aren't that desperate to change.