I'm still thinking perhaps I can walk a fine line here and say I still want to separate, that I will not work on our marriage, but after 15 years of marriage I can give her a little time to find her center and get in a good place . . .
"Blccccch." "Find her center" ???
If you told her you needed to separate yourself if her affair continued, then you need to back it up. Have you asked her to leave?