Perhaps you missed what I said, at 15y/o I wouldnt have been a bottom bitch and said "mommy, mommy, mommy the bad woman made me come in there and she wanted to touch my winkie" 
I can say with 100% certainty I would have made sure the woman put her clothes on and then made it seem like my idea. What does this kid have down syndrome? A boy tapping a 24yo that looks like that?? He would have been the king shit at his school.
Would love to see a pic of said mother...probably some dried up post menopausal hag who would be fucking her personal trainer if she didnt have a pre-nup
Think about this: 15 yr old goes to the gym with mother. 15 yr old flirts with 24 yr old (most nrmal 24 yr old females are like "ew").
dude maybe was looking at a "mommy figure", and when mom stepped in, "he caved"
He's 15, and we don't know the situation, maybe she has emasculated him and was being over protective
And are saying what you would do now at 15, or would rather actually remember all the stupid things you did at 15, and remember that a grown man saying what he would do in that situation, makes no sense?
Of course you and I and anybody with sense would make seem the other way around (now in hndsight).