How about Adam pining after Carolyn and getting so jealous he [spoiler]attacked Tony Peterson after he saw Tony and Carolyn kiss?[/spoiler] That was another unrequited love, although I always thought Carolyn had a thing for Adam. It was those god-awful scars that put her off.
As far as that goes, Carolyn running after Burke made me want to cringe. The girl had no dignity whatsoever!
Now, as to Carolyn's "wild" ways, I always felt it was inferred she slept around -- definitely with Buzz and at least once with Burke. Of course, it being the '60s, TV soaps were pretty tame in that regard and only hinted, unlike today where love scenes are like soft porn!
My evidence of Carolyn and Burke: [spoiler]Joe found her in Burke's hotel room. She was cuddled up on the couch barefoot.[/spoiler] To me, that was sort of a euphemism for what had gone on between them earlier.