The Fresh Prince Of Bel-Air: When You Hit Upon A Star
Series 4 episode 17 from 1994.
Will meets a famous pop star, Michelle Michaels, and falls head over heels in love.
She sweeps him off his feet, with parties, travel, fame and fortune.
However, she gets bored very quickly and dumps him.
He even misses his birthday party for her and his family isn’t happy, although it was a surprise and he didn’t know about it, so I’m not sure why.
Movie pages here.