Is it normal to think other people are attractive in a relationship?
Yep.Totally normal
Yes, it’s normal to notice or find other people attractive while you’re in a relationship. Attraction doesn’t automatically mean you love your partner less or want to act on it.
Being in a relationship doesn’t switch off your ability to notice good-looking people. For lots of people, attraction is an automatic reaction, not a choice or a sign that anything is wrong with the relationship.
What matters more is what you do with the feeling. People differ on what they’re comfortable with, so it helps to respect the boundaries you and your partner have agreed on. Noticing someone is attractive is one thing; pursuing them or hiding behavior that breaks your agreements is another.