P.S.
As a happily married person, I have to tell you--sexual compatibility is REALLY important. If you don't have it, chances are the marriage won't work. So be sure. I could never be happy with a woman who did not enjoy oral sex both ways, or who did not like to lick and penetrate my anus. Now, at first, my wife (when she was my girlfriend) was weirded out. Then again, she was weirded out by my penis, as she was a virgin. But she didn't know straight men liked receiving anal pleasure, and she had all the stereotypes going. But after awhile, she found she really liked licking and fingering me. She goes wild, almost like I do when I give her oral sex and finger her. She bends me over a table, or gets me on all fours in bed, and she kisses and bites my bottom and licks my balls from behind and then ... WOW ... my anus. She laughs and makes happy noises and I just lose myself in pleasure. It's great to be on the receiving end for a change. She makes a production of opening up the tube of lubricant and working her finger in. I HAVE TO HAVE THIS. I can't live without it. It fulfills me and satisfies something that nothing else can do. I love oral sex and intercourse but I need this too.
I suspect your fiance is the same way. So if you love him, love his ass. Marry him if you're sure he's going to be faithful to you, if he adores you and you feel the same, and you're really into each others' bodies and souls. Good luck.
--WD