Yes, i think that guilt is normal. I also went through this when we first decided to get into the life-style. Only because i love my fiance so much and i felt as if i was cheating on him. After a reading on the board, i found out that you have to seperate the two. Love your boyfriend, fiance, and hubby, but only use the life-style for entertainment purposes only. Then love and sex became easier for me to deal with. Hope it all works out for you. Good luck and read more on the board.
It helped me out alot.