So I'm 21 and my girlfriend is 23 and we have been dating for about a year and a half. We are really close and about as serious as a Christian couple can get before getting engaged. We both both believe and have decided to abstain from sex until marriage, which won't be possible until at least 3 years since we are both studying long degrees. I have no problem with this as my level of self-control is quite high and it is something that is very important to her. It's just that she has set boundaries on anything that might possibly lead to sex.. Which I can understand too, but I have been talking about it with two of my older, close non-Christian friends and this question came up: How can someone guarantee a happy/successful marriage if you don't know whether you and your potential partner are "sexually compatible"? Not that I want to go into the particulars of what that even means, but they seem to have a point. You hear of so many marriages that have failed, some of them being between people I really used to look up to as Christians, and you can't help but wonder... My mom nearly left my dad for this reason, and I am so grateful they've patched things up... But it's not exactly something I'd be comfortable discussing with them. :-S