I think it's about sex. But then, I think everything's about sex so I might not be the best person to ask...
'twenty miles out of town in cold irons bound..' surely it's a metaphor for sexual frustration? He wants her, but she ain't puttin out... he's being held at arms length
'one look at you and i'm out of control, like the universe has swallowed me whole'
'its you and you only I'm thinking about...'
'looking at you and i'm on my bended knee, you've no idea what you do to me..' (if you've got M&A watch him singing the full version on the extras, see the look he gives on this line and tell me I'm wrong, I dare you)
It's Bobby saying - in the growly sexy way only he can - 'come on baby, I'm soooo ready......'
Come to think of it, 'Can't Wait' has much the same feel and I always think these two should play back to back, instead of being seperated by 'Make you Feel my Love' (which I love, but is more sweetly romantic than hot - maybe he thought we all needed cooling down a bit in between, hey, maybe it's like foreplay.... I should probably quit while i'm ahead here......)
ladies and gentlemen, welcome to the contents of my mind........