This song sounds happy, but it's actually rather bittersweet.
I believe that it's about that feeling that you get when you're excited about being with someone--in love--but you're also scared of comitting yourself for whatever reason.
The "because I'm mental" might be a clue as to the narrator's temperment: he might be warning his significant other that he can get crazy, that he has many problems, so she'd better be careful with him.
This song sounds happy, but it's actually rather bittersweet.
I believe that it's about that feeling that you get when you're excited about being with someone--in love--but you're also scared of comitting yourself for whatever reason.
The "because I'm mental" might be a clue as to the narrator's temperment: he might be warning his significant other that he can get crazy, that he has many problems, so she'd better be careful with him.
It sure sounds happy though.