I clash enough with my church by being gay....and drinking, and swearing, and probably a shit load of other stuff. I'm southern baptist, and a pseudo-fundie. I believe that for the most part the bible should be taken at it's word, but that there are things the fanatic fundies have taken too far...like I think genesis is like the hebrew asop's fables, the levitical laws were meant to help the isrealites rebuild and prosper after leaving egypt and were not meant to be applied to todays lifestyles, even the most fundimental women would have a fit if they could no longer wear clothes made of two different materials ;-)
all that to say, my only religious-based line is being promiscuous, it's neither physically healthy but psychologically (read spiritually if you want) as well.