I think IC is definitely a good way to go, like Aubrie mentioned.
When I was attending IC, my therapist also facilitated a men's group. It wasn't an infidelity-based group, but there were both BS's and WS's in the group, as well as other guys going through struggles, mostly marital-based. It was nice to get some face-to-face feedback from a group of peers.
Maybe your best bet is to seek out an IC, and then go from there? Honestly, the men's group was nice, but I got most of my work done directly through my IC and SI.
Best of luck to you.