So? Act like you're the god of relationship advice, and tell him you can allay any doubts he has. But in order to give accurate advice you'll need to see pictures.
To be honest, you've already had all the sensible advice you need. If you just think she's hot and you'd like to have a go, either walk away or pile in whilst accepting that you're a shit and everyone will know you're a shit (ie, family). If you enjoy her company and can imagine dating together...