K, the dude is not running away and he ain't hiding either.
I would listen/watch carefully and try to see what is he focusing on. Some 80% of verbal communication may be his body language. Watch him good. Most people are dropping subtle hints left and right.
Do not disregard the contents of his talk. He might look like he is just shootin' the breeze, but he might be actually trying to find out, if you are interested in him, scared, closeted, whatever.
There are plenty cool young dudes out there who are into the men in their 40s, 50s, whatever. They might be a minority of their peers but they are a very significant one at that. Lots of guys are looking for much older men, simply because their 'typ' is a mature, experienced, secure dude as opposed to a guy of their own age group. Some are into father figures. Others are not.
The fact is that a certain portion of hot, young dudes wants a sugar daddy. There is no point in assuming that every younger dude is after your saved cash, but keeping your eyes and ears open while not being paranoid would do no harm. It is all up to you to decide what attitude you may want to adopt in this matter. It is an issue well-worth a serious thought.
If you enjoy the talk in the lockers next time, how bout inviting your young life guard for a couple of beers at the nearby sports bar? No harm done.
Good Luck... Young dudes rule!
KD