This was sounding terribly familiar. Excuse me for putting this bluntly, but this is an area where men usually have so much more sense. They get burned by a woman, and they vow never, never to get taken for a ride again. And 99 percent of the time, they don't, and the girlfriends afterward get all the shit and abuse for this one bitchy Ms. Trouble. Women will go back again and again, and reexperience the same thing over and over, trying to make it right.
Men learn their lesson the first time.
I'm shocked that you'd allow this Shelley person in your life. I didn't add that Kevin always had a profoundly feminine streak in him. We really click in ways that I never have with anyone else before. Of course you do. That's the thing about Ms. Trouble.