Mom of three here, including a 15 year old daughter. I agree with this guy. If I caught you offering my child affection, I’d call the police no matter your friendship or explanation. Also, how odd of you to assume that she doesn’t receive affection. She’s a teenage girl after a crush’s attention. I had long term crushes on older family friends as a girl and teenager. Good thing no one that I knew was stupid enough to reciprocate or that would have meant that I’d be sexually assaulted. And that would be exactly what you were today, assaulting a young woman who can’t consent to an intimate touch with you.

TL;DR: don’t even look her goddamn direction and what the fuck are you thinking that you at 23, can provide her with the emotional support that you perceive that she needs, when you have no sense of what a child needs at all?