Late at night

I walked in on you I couldn't believe my eyes I forgot to knock
and I apologize but I can't forget what I saw I always wondered
if you had a darker side you wear a smile but your eyes are red
like you just cried now will you explain? by day you wear your
happy face, everybody thinks you're perfect, they don't know
much about your pain, late at night no one can see, you cut
yourself to get back at me, late at I try to understand, your
friends all call you first when every little thing goes wrong,
they know that they can count on you,