Hi Homebody and welcome!

You're definitely not alone. You've found a supportive community of people who "get it." Each relationship is different, but there are some similarities and sharing those helps us feel less alone and helps us deal with our situations.
I hope you don't mind if I ask a few questions. It helps us know better how to help you.
How long have you and your H been together? You say you've left several times before. Is there anything about this time that distinguishes it from others? It's been 8 months. Is that typical for you? When you've gotten back together in the past, how has that gone about (were you the one who reached out or was he)?