Sincerely (Too Late To Turn Back Now) lyrics

I could tell you I came by to say hello But I knew good and well that you weren't home Now these lines I write Will reach you by midnight Tell you that it's over, anyhow Sincerely, too late turn back now Blue words on white paper find a way To say what I'm not strong enough to say If I stay to say goodbye Someone's bound to cry And I don't think that I can stand to hear that sound Sincerely, too late turn back now I don't need to sign my name Because you know me by now And I won't have to take the blame When tears come falling down I just ain't got the heart to hang around Sincerely, too late to turn back now P.S. I guess I let you down