Is it normal to be jealous of your best friend’s boyfriend?
Yes, jealousy about your best friend’s boyfriend can happen, whether you’re attracted to him or missing the attention and closeness you used to get from your friend. The feeling itself doesn’t make you a bad friend; what matters is how you handle it.
It’s pretty human to feel jealous when someone close to you starts sharing their time and affection with a partner. Sometimes you have a crush on the boyfriend; sometimes you simply miss feeling like your friend’s number-one person, or wish you had a relationship of your own.
Try to figure out which part is bothering you. You can ask your friend for some one-on-one time or make room for other connections in your life. If you do have feelings for him, that’s still just a feeling—but respect their relationship and avoid trying to come between them.