Is it normal to be jealous of your friend's partner?
Yes, it’s normal to feel jealous of your friend’s partner sometimes. It might be envy of the relationship they have, or even a crush; what matters is how you handle the feeling.
A little jealousy can pop up if your friend’s relationship looks especially happy, or if you wish you had the closeness and attention they’re getting. Sometimes the feeling is about the partner themselves. None of that makes you a bad friend; feelings aren’t the same as choices.
Try to notice what the jealousy is pointing to without taking it out on your friend or creating trouble in their relationship. If you’re attracted to their partner, keep respectful boundaries and give the feeling room to pass. You can also use the pang as a clue about what you’d like more of in your own life.