I'm talking strictly on the show, not as boyfriend/girlfriend in the past...just the times that we see in the episodes. Also not counting times within one episode....just how many episodes involved them "doing it" that we are aware of.
I can think of two........TOW they are just bored and try to incorporate "this" with "that," and they make a set of rules like: "sleeping over is optional.
Then there's the one where Jerry wants to prove to Elaine that he can bring her to the "Big O." Jerry finds out that Elaine had "faked" it during their relationship. This too, is one of my favorites.....especially when Jerry asks her what was all the moaning and growing..etc.etc. and she (with her finger in the air checking of each example) says: "Fake, fake,fake, fake, fake" She has the most devlish grin on her face...it was to die for!
Dr. D.
"The weather is here, wish you were beautiful."