In my opinion, this song is about a girl who isn't looking for love. She had a hook-up with a guy one night, and he thought they had something going on. He's all goo-goo for her (buying her flowers and candy, saying he loves her, etc), but she thinks the slightest of him. "You must be high/ 'cause it was just one kiss." She's saying that he's gotta be living in a fantasy world if he thinks they ever had anything going on. But that's just my opinion.
In my opinion, this song is about a girl who isn't looking for love. She had a hook-up with a guy one night, and he thought they had something going on. He's all goo-goo for her (buying her flowers and candy, saying he loves her, etc), but she thinks the slightest of him. "You must be high/ 'cause it was just one kiss." She's saying that he's gotta be living in a fantasy world if he thinks they ever had anything going on. But that's just my opinion.