Is it normal to be attracted to someone else while in a relationship?
Yep.Totally normal
Yes. You can love your partner and still notice or feel attracted to someone else; what matters is how you handle it and the boundaries you’ve agreed on.
Being in a relationship doesn’t switch off your ability to find other people attractive. A crush or passing spark can happen without meaning you love your partner less or want to leave. Lots of people experience it, even if they don’t always say so out loud.
The feeling itself isn’t a betrayal; what you do with it is where your relationship’s boundaries matter. You can let a passing attraction pass, or, if it’s growing into something you want to act on, take a moment to think about what you want and be honest with your partner rather than sneaking around.