I'm afraid my answer may be slightly different from the others on here. At the end of the day the things that make you and this guy compatible are more than sex alone but other interests, passions, etc. Sex is something that you should explore with your partner, slowly and gradually. Of course, you may be in sync sexually and could have a more passion filled life with someone else but I think you need to evaluate what you're looking for a bit more closely and see how compatible this guy is with your requirements.