Two and a Half Men Season 2 Episode 9: "Yes, Monsignor"
When Charlie leaves the house to avoid a date he can't stand, he ends up at the coffee shop where he runs into his old girlfriend, Lisa (Denise Richards), who is now a divorcee with a baby. Jake tries to justify to his father why he isn't doing well in school.
Charlie: So, what are you doing for dinner tonight? Lisa: You're shameless. Charlie: Thank you. Lisa: It's not a compliment. Charlie: Whatever. So, how about dinner tonight? Lisa: Charlie, a lot has changed. Charlie: So what? I'm older and wiser, and you're hot and on the rebound!