Married woman having an affair with a younger man who’s also in a relationship

I am a married woman with children and I’m having an affair with a younger man (10 years younger) who’s also in a relationship with a baby!! I know what we’re doing is wrong but neither of us intended for it to get this far or for anyone to get hurt. My marriage is at an all-time low at the moment and has been for a long long time, we just don’t get on at all, constantly argue and there is no intimacy between us at all!! but I just plod on for the sake of my children – H (the other man) is more or less in the same position but he’s not married just lives with his girlfriend and baby. We first started out just messaging each other general conversation but things progressed further with each of us confessing how we’d love to meet up – eventually, we did at his house while his partner was out and one thing led to another!! We’ve recently met up in a hotel room and had the best time ever. I can’t leave my marriage as it would destroy my husband and kids and he won’t leave his girlfriend because of his baby, he says he can’t leave her til his baby is old enough to leave home (which is a long way off!) We don’t see each other as much as we’d like to as it’s difficult for us to both getaway but message most days. I am at an all-time low at the moment as I can’t stop thinking about H and the times we do spend together 🙁 would love to hear from anyone who’s been in the same position……and what I should do x