Is it normal to fantasize about someone while in a relationship?
Mostly.Normal for most people
Yes, it’s normal to fantasize about someone else while you’re in a relationship. A fantasy by itself doesn’t mean you love your partner less or want to cheat.
Your mind can find someone appealing or play out a scenario without it being a plan or a verdict on your relationship. Lots of people in committed relationships have passing fantasies about other people; thoughts aren’t the same as actions.
What matters more is how you handle it. If the fantasy is taking over, feels tied to something you’re missing, or is nudging you toward crossing boundaries you and your partner agreed on, it may be worth thinking through what you want and what feels fair to both of you.