She looks so good movin' cross the dance floor Better than the day she left me Arm in arm with somebody new Holdin' hands and laughin' like we used to I got my best smile on but it's no disguise It don't hide the pain in these eyes [Chorus] I did her so wrong for so long Turned my back on her love now she's long gone I did my part to break her heart She walked out on me and tore my world apart She used to be mine Oh she used to be mine It's takin' every bit of strength that I have To keep a hurt look off my face I can't keep from lookin' back over my shoulder At the lucky man taking my place Oh, if it weren't for my pride I'd probably take off runnin' I guess what I'm feelin' is what I got comin' [Chorus: x2] Oh she used to be mine She used to be mine