Mdu, I feel for you. It's really challenging not to go down the rabbit hole of obsessive thinking when your H works with OW. I have definitely struggled with this too. At some point we have to make a leap of faith and trust again. That takes time. I'm not there yet either. It's getting easier as I see the changes H is making. Be gentle with yourself and try and focus on the positive things your H is doing right now. It sounds like he's been trying taking some good steps lately. That's great news!
Me: 30 H: 35 M: 5 years S2 Signs of MLC started Feb 2014 BD - PA July 2014 Piecing/reconciling late July 2014