When did I fall in love with you?
It's not a matter of "when" but rather "how".

I fell in love with the way your smile set my world ablaze with light.
I fell in love with the way you held me close and kissed my cheeks ever so gently.
I fell in love with the way you looked at me at random times and smiled, then held my hand even tighter.
I fell in love with the way that I felt so safe wrapped in your arms.
I fell in love with the way you were open to me when all my past lovers had been closed off.
I fell in love with the way that my love for you made all my days bright and worth living.
I fell in love with the way that you were all I ever needed and wanted.
I fell in love with the way that everything was so easy and free
between us.
I fell in love with you, and to be truthful, I'm still falling