stuck on, be

be stuck on

1. To be very smitten with someone or captivated by something. Oh, he's been stuck on you for years, so I think he'd be thrilled to go with you to the dance!
2. Fixated or focused on something, such as an idea, feeling, or belief. A: "Why is Adam mad at you?" B: "I think he's stuck on the fact that I made the track team and he didn't." Why are you so stuck on the comments some random person on the internet made about your video?
3. Unable to make progress past a certain point or level due to something that one is confused by, unable to do, etc. I'm stuck on this part of the instructions—can you explain it to me again? If you get stuck for too long on any one question, just skip it and move on to the next.
See also: on, stuck

stuck on, be

Be very fond of, as in She's been stuck on him ever since first grade. [Slang; late 1800s]
See also: stuck