To have something so much and so often that the desire for it greatly decreases. Exhausted with something pleasurable because of the excessive presence of that pleasure. Especially with food.
To get sick of _____.
To have too much of a good thing.
To have a plethora of something delightful and but then the availability makes it loose it's zest.
I bet his booty calls with that girl are going to get cloy soon.
Having sex with a girl like that cloys after the 3rd or 4th time.
A cloyfriend is that guy who just won't get it. He will NEVER be your BOYfriend, but he thinks if he hangs around long enough he is sure to get lucky someday. He NEVER will. He is cloying and annoying and is just pathetic enough that you don't have the heart to tell him the awful truth, not that it would deter him. A Cloyfriend is basically a harmless stalker.
Larry just keeps posting pictures of him and me on his Facebook page. We were up at Tahoe with a bunch of people over the Fourth, but somehow he managed to get pictures of us together, what a CLOYFRIEND.
The deathbed scenes in the novels of Dickens are famously cloying: as Oscar Wilde said, "One would need a heart of stone to read the death of Little Nell without laughing."