(Featuring LeAnn Rimes) By Steve Robson and Ronan Keating Four o'clock in the morning My mind's filled with a thousand Thoughts of you And how you left without warning But looking back I'm sure you tried to Talk it through Now I see it so clearly We're together but living separate lives So I wanna tell you I'm sorry Baby I can't find the words But if I could, then you know I would Now I won't let go, know what we can be I won't watch my life, crashing down on me Guess I had it all, right there before my eyes Girl I'm sorry now, you were the last thing On my mind You carried me like a river How far we've come still surprises me And now I look in the mirror (look in the mirror) Staring back is the man I used to be, with you How I long for you Now I won't let go, know what we can be I won't watch my life, crashing down on me Guess I had it all, right there before my eyes Girl I'm sorry now, you were the last thing On my mind Girl I'm sorry I was wrong Could have been there Should have been so strong, so I'm sorry Now I won't let go, know what we can be I won't watch my life, crashing down on me Guess I had it all, right there before my eyes Girl I'm sorry now, you were the last thing On my mind (repeat)