I haven't found that sex has affected intimacy. My bf and I have grown together in both intimacy and having sex. Sex is fun and adds to the relationship, it doesn't mean that we didn't do intimate things like kiss and cuddle and hang out etc. Now we are apart we both crave spending time together over sex like watching tv together or cuddling on the sofa, although we miss sex too of course. Sex adds fun, it's been my experience that if a guy is into you sex doesn't destroy that. It's just your choice if you want to give that part of yourself to that person and if you are ok with all possible outcomes.