I find it a little worry that some people seem to take the attitude that people can't change. This would imply that if ANY of us has some something stupid, ever, we couldn't possibly grow up or learn from experience, that one irresponsible act means one is branded as irresponsible or stupid for ever.
Can ANYONE here say that they have never done anything stupid, anything irresponsible, anything they've regretted. Let he/she is without sin.....
If I was recruiting for a responsible job, I'd rather have the person who'd learned and grown from past experience, than one who was that blinkered.