The song is clearly about a girl in high school who he didn't have feelings for ("we were never making love") but fooled around with. They were just exploring themselves with each other ("penetration... had to wait for someone else", "mostly mutual masturbation", When he first tried to end it, all it took was her lifting up her dress for him to give in to his urges and fool around with her one more time before he never spoke to her again.
But the clear best part of the song is him admitting he had a dream about sleeping with her mom, something that NO ONE knows about ("a secret all along"), until he realizes that she will now know about it when she hears this song playing in the car now that she's married (such a meta moment)... "I think that's me".
The song is clearly about a girl in high school who he didn't have feelings for ("we were never making love") but fooled around with. They were just exploring themselves with each other ("penetration... had to wait for someone else", "mostly mutual masturbation", When he first tried to end it, all it took was her lifting up her dress for him to give in to his urges and fool around with her one more time before he never spoke to her again.
But the clear best part of the song is him admitting he had a dream about sleeping with her mom, something that NO ONE knows about ("a secret all along"), until he realizes that she will now know about it when she hears this song playing in the car now that she's married (such a meta moment)... "I think that's me".