Suddenly lyrics

How can you tell by lookin' at me?
How can you tell, you like what you see?
Suddenly there's a boy in the rain alone
Suddenly there's a girl in the rain alone

Oh, yeah
[ Lyrics from: http://www.lyricsmode.com/lyrics/b/bee_gees/suddenly.html ]
How can you tell humans are real?
How can you tell, you like what you feel?
Suddenly there's a girl in your heart, oh, boy
Suddenly there's a boy in your heart, oh, boy

Yeah, yeah

Yeah, how can you tell by lookin' at me?
How can you tell, you like what you see?
Suddenly there's a boy in the rain alone
Suddenly there's a girl in the rain alone