Is it normal to not fantasize about your partner?
Yep.Totally normal
Yes, it’s normal not to fantasize about your partner. People experience desire and sexual imagination differently, and fantasies aren’t a measure of how much you love or want someone.
Some people have vivid sexual fantasies about their partner; others rarely fantasize at all, or focus on the moment rather than imagining things. You can love and desire your partner without your mind producing a little private movie about them.
What matters more is whether you feel good about your sex life and connection. If the lack of fantasies is new and comes with a change in desire that bothers you, it may be worth talking about what’s changed—but not fantasizing, by itself, is nothing to worry about.