Does anyone know what video this is, who sings it, and what song it is?

this R&B singer (af. am.) is sittin in his car outide his gf's house and he dials her # and she doesnt pick up ... then he talks about how would need to check into a clinic if she ever left or something cuz he would go crazy, and close to the end he dances in the rain on the street ... i so totally forgot the artist and the song. i just remember the video.