Hello, I Am A 26 Year Old Female, And My

Hello, i am a 26 year old female, and my boyfriend is 29 years old. we are in a serious relationship. The issue is that I feel that premarital sex is important so that we can find out if we are sexually compatible. he does not feel the same way and wants to wait until marriage. let me note that he is a virgin, and i am not(i have been with one other person). I also want to add that we are very sexual, and we do everything except for penetration. we have good communication, and are very attracted to each other. My question is, is it a risk if we do not sleep together before marriage? could we face any problems that could not be fixed? would our marriage be doomed?