He's going on tour, can I trust him?

My partner has recently been offered a brilliant opportunity to go on tour with a band. I’m over the moon for him but I’m also a bit freaked. I do trust him but if this becomes a regular thing and he’s away alot will he stray away? I know I’ll never know unless he or someone else told me but I am concerned and I don’t like the whole ‘what goes on tour stay on tour’ attitude that bands seem to have. Maybe the ‘little woman at home with the children’ doesn’t suit me very well! If anyone has any advice or opinion on this it would be much appreciated.