5. After a school dance (“Beverly Hills 90210”–Brenda to Dylan): This is the ultimate cliché, which is why it makes sense that it appears on this list.

4. To a married man you’ve been on and off in love with for years (“Gilmore Girls”–Rory to Dean): At the end of season four, Rory ends her complicated freshman year of college by sleeping with her high-school boyfriend, who just happened to get married a few episodes earlier.

3. After convincing yourself you’ve found the perfect guy who you love madly, sleep with him only to have him turn him into a huge jerk (“Buffy the Vampire Slayer”–Buffy to Angel): Our favorite vampire with a soul was cursed to lose his soul after experiencing a moment of perfect happiness, which apparently happens to coincide with the moment of orgasm. Even undead, he’s a typical male.

2. After saving yourself for marriage and getting married in your sophomore year of high school just to have sex (“One Tree Hill”–Haley to Nathan): Haley didn’t want her recently emancipated boyfriend to grow up without her and with Internet porn, so this was the next logical solution.

1. During a Madonna montage (“Glee”–Finn to Santana): This one needs no explanation. It was just weird.