Lyric discussion by nemu 

Cover art for One Minute lyrics by Kelly Clarkson

I love this song. I never listened to the lyrics before, I just loved to dance to the beat. But now that I look at it, I realize I can relate so well.

I think she's talking about confusing relationship. She doesn't know how she feels and feelings just get so bottled up that she had to 'scream at the thought you kept inside'. She's happy, and then sad, and feels confused about the whole thing. Nothing lasts long. And like PerfectlyWrecked said, she's wondering if he's worth it because "one minute goes fast."