I love those specific moments of intimacy with my SO. Sometimes when you have sex, it's just sex. But then there's the times when you just completely lose yourself in that person. I feel if one is lacking any passion in their sex life then there needs to be an evaluation of some sort of the relationship. Maybe you're both stressed and something is bothering one of you. It's best to talk it out and get to the bottom of it. Because pent up emotions can ruin sex and can definitely ruin a relationship. Sex with someone you love should be a passionate experience. Nice and slow, because you're in no hurry. If he's quick to take his pants off right away it might be a sign you're losing some of the passion. Make sure there's lots of foreplay because that's the foundation of your sex life.