for your #1, there's "Livin' On A Prayer (http://www.midnightwhispers.ca/viewstory.php?sid=1558&warning=10)" by lupin111 where B ostensibly 1st meets J at the diner & the whole gang (except Linz &, i think, Em) bet him that he can't get into J's pants within 1 week after it appeared that J took an immediate dislike of him.