I'd like to first thank all the ladies who took time to give me advice.
It took a lot from me but after thinking it a half a$$ attempt on his part and mine to work it out-- I decided to separate and we have now officially decided to get a divorce.
I have taken steps back away from the man whom I had the affair with and have begun on working on myself, because even if my marriage was not working out- I am the one who took that step and broke my vows (even if my ex had done it before- it did not excuse nor justified my behavior).
I am going to therapy, living back at my mothers (and planning on moving on my own in a few months). I began doing yoga, running and simply spending time with my girlfriends and my family to bring back the person I was.
Again thank you to all who had some wise and even harsh words....
For anyone out there going through anything similar- take 2 steps back and see if your marriage is worth saving...or if you can even do it...because sometimes you need to save yourself even more.