Peter Cetera

Merely by chance
Very unsuspecting
You caught my heart
Unprotecting me
Now I've fallen in love with you
Just when I thought
Life was free and easy
You came along to me
Soft and breezy
Now I've fallen in love with you
(chorus)
And for the first time in my life
I know what it's like to be a happy man
Happy man
And for the first time in my life