Hi, welcome, and sorry you've found yourself here.
I know this his the hardest time you've been through. Your head is probably spinning, not knowing what to do. You've been given some really good advice so far.
One thing I learned. ... I always said if my H cheated on me, that it was OVER, no questions asked, however, I didn't leave, and have learned that it's usually best not to make a move right away. Read, learn all you can. You can always leave ANY TIME, even years later for this reason alone. It's totally up to YOU, not him.
If he comes clean...all the way....and is willing to stop everything, be totally transparent (let you have all his passwords, have access to his phone, computer, iPad, etc....anything that could have incriminating information on it. If he does anything again, you'll see it. If he doesn't, then you'll know, too. I went through EVERYTHING, and learned more than I ever wanted to, but am glad I did, so I knew where we/he stood.
There are books to help, too. One, which my H has read twice now is: "How to Help Your Spouse Heal From Your Affair". I highly recommend it.
Others will help you more than I. I'm still learning myself, and my H & I are in R, and so far doing well, because he has committed himself to it completely.
Best of luck & (((((HUGS)))))
[This message edited by SusanneH at 11:09 AM, October 16th (Wednesday)]