Na, na, na, na, na   I'm gonna lose my mind   Na, na, na, na, na   You are the reason why      Left your heart by the front door baby   You don't need to come 'round my way no more   That's what my girlfriend said to me   At 10:23 on a lonely Monday morn      Found another and he treats me good   Like you never could   Go away I think you should   Needed you but you weren't there   So now I don't care   Then she put her finger in the air      Baby how can you doubt my love   When you're the reason I'm smilin'?   ('Cause baby love, the reason why)   If you deny my heart   Then you should know that it's for you that it's aching   'Cause everything I'll ever need is you      Na, na, na, na, na   I'm gonna lose my mind   Na, na, na, na, na   You are the reason why      Yesterday I saw my ex-girl at the mall   With some kid by the name of Tommy Smith   She was on his dick and in the corner of her eye   She saw me staring at her and him   She kissed him, then she smiled at me      They both started laughing   Then they walked passed me   She was looking at him like she looked at me   Right before we'd go home and do our thing      I said, "Gimme one more chance I love you   Gimme another chance, I can't live life without you"   She said, "Get away from me boy, I don't care"   Walked away with one finger in the air      Baby how can you doubt my love   When you're the reason I'm smilin'?   ('Cause baby love, the reason why)   If you deny my heart   Then you should know that it's for you that it's aching   'Cause everything I'll ever need is you      Na, na, na, na, na   I'm gonna lose my mind   Na, na, na, na, na   You are the reason why      Called her up on the telephone, my Casio read 2 a.m.   Moonlight shone through my window   Had a song by Hendrix in my head   Never understood this girl      This thing called love and the world we're in   Let it ring two more times, she wasn't there   Threw my finger in the air      Baby how can you doubt my love   When you're the reason I'm smilin'?   ('Cause baby love, the reason why)   If you deny my heart   Then you should know that it's for you that it's aching   'Cause everything I'll ever need is you      Na, na, na, na, na   I'm gonna lose my mind   Na, na, na, na, na   You are the reason why      Baby how can you doubt my love   When you're the reason I'm smilin'?   ('Cause baby love, the reason why)   If you deny my heart   Then you should know that it's for you that it's aching   'Cause everything I'll ever need is you