For a long-term (as in, years/decades) relationship to work, there must be some level of physical attraction. Not necessarily The Hottest Person I’ve Ever Seen, but you’ve gotta think they’re attractive. Eventually the novelty and “spark” wears off, and you’re left with just the basic realities and day-to-day normalcy of your partner. And that’s not a bad thing! You trade the “spark” for the comfort, the novelty for the feeling that you’ve always got someone in your corner.
But if you’re relying on the initial rush of newness to keep your sex life going, it’s going to be tough. If you’re just…not that attracted to your partner, and you never really were, the sex won’t be that great."