The ancients regarded sexuality differently- they were not Christian societies. The Romans, however, did not regard it as completely acceptable- they had laws against such behavior. I hate citing Wikipedia but y’all can read more here:
http://en.wikipedia.org/wiki/Lex_Scantinia
Obviously modern Conservatives have no impact whatsoever on folks who lived 2000 years ago.
At the same time Roman orgnies, and the court of Philip of Macedon were hardly places of high decorum.
Now, regarding sex in Rome ~ if it involved your typical Roman middle-class, that's one thing. If it involved the supervisor of a a latifundia and the female slaves, that's quite another. No need to study the ancients ~ just look at American history.
Again, a statement was made that modern Conservatives (and Christians) cause homosexuals to engage in lewd behavior. To that I say "Bwahahahahahahahahaha".