Undesirable loving

I can smile at you in a way no one can, but I don't believe I could laugh the way I should if you asked.

Though I'm free to be me, I think it's a shame that being me means you'll just run away.

If you come far to close I might have to run because I don't trust myself with you, not with you so ready for my arms.

Why must you tempt me with that rare laugh and true cheerful smile?

Am I ever able to say those things that you'll never truly want to hear?