It's a personal decision.
I tried to R but ended up in false R for a year. My STBXW wasn't really remorseful. Took me 2 years to file and I wish I had done it sooner. If it's a dealbreker for you then 2 months from now or 2 years from now it's still going to be a dealbreaker for you. It just takes some of us longer to realize it.
It's truly messed up that as the BS we are the ones that feel put in a position of deciding to save or end the M when the reality of it is the WS killed the M or put it in a comatose state with their A(s). All we are doing is deciding to pull the plug or leave the ventilator on and see if a new M can come out of the ashes of what was.
My advice, decide what YOU want and move forward it's your life and your choice. You didn't cheat your WH did so if anyone should have regets he should. If you haven't, get into IC for yourself and keep postign here. Check out the different forums on the site. Spend time in the R forum AND the D/S forum among others. It's your life and your decision.
At the end of the day even if my STBX was remorseful I still would have left because her A(s) were dealbreakers for me. It just took me a long time to realize that the only way I could move forward in life was without her. I wish you the best.