I think a lady who's spent 3 years of her life with a guy KNOWS what is the story...

It doesn't sound good to me. While you may have a problem with jealousy, he may have a problem with commitment and loyalty, too. I know it would be very difficult, but why not go back (?) to playing hard to get, and see if that peaks his interest; if not, then I would guess his writing is on the wall. TC