JR, this won't make it hurt less, but they is always someone else involved. Even if it's just in the walk aways head. We once had a poster whose wife left him because she was convinced she was destined to be with a famous country singer.
As others have said, this changes nothing. Unless infidelity is a deal breaker for you. If it is is be very careful about backing down from that. Backing down from that as a deal breaker teaches her you're willing to change your boundaries for her. I know it's hard to think clearly when you're reeling like this, but if you've ever made it known that you won't put up with cheating, putting up with it will just set you up for more pain later.
Keep posting, we're here to help you!
M(53), W(54),D(19) M-23, T-25 Bomb Drop - Dec.23, 2017 Ring and Piecing since March 2018