The Fresh Prince Of Bel-Air: Nice Lady
Series 1, episode 20 from 1991.
Lord Fowler and his daughter, Lady Penelope, visit from England.
Will is entrusted with escorting her to the opera but she’s using that as an excuse to go out on the town.
Just as Will is about to confess he’s lost her, she turns up and says they had a lovely time together at the opera.
Movie pages here.