Is it normal to have a crush on someone else while in a relationship?
Mostly.Normal for most people
Yes, you can have a crush on someone else and still love your partner. Feelings can pop up; what matters is how you handle them.
A crush can happen even when you’re happy and committed. Being in a relationship doesn’t switch off your ability to notice or feel drawn to other people, and a passing spark doesn’t automatically mean anything is wrong with your relationship.
People differ on what they consider harmless flirting or how much they’d want to know about a partner’s crush. The useful question is whether you’re feeding the crush in ways that cross boundaries you and your partner have agreed on. You can acknowledge the feeling without acting on it, and take a little distance if it’s starting to crowd out your relationship.