Seabreeze,
You are wondering why a younger man is interested in an older woman such as yourself...there are many reasons: the maturity, the self-confidence, the integrity, and not to mention the sexiness factor of a sexy woman who is older....a mature woman who can carry themselves in an alluring way is definitely a turn on for ANY man, regardless of age.
However, you seem to have some taboo about not getting involved with a younger man. I'm not sure where that stems from, so could you please elaborate?
Additionally, you met with this guy to talk and be all platonic. The thing is, guys do not set up dates with girls to be platonic. They set up dates with girls so that they can get involved physically. Some guys have more patience - for instance, I will stop dating a girl if there is no sex after 3 dates, whereas other guys can go for months without it. However, no guy is out for platonic friendship with sexy women. We have guys for friendship.
My logic is telling me that even though you denied any physical involvement on your last date, he is of the patient type and will try to woo you into bed eventually. This will continue unless you either:
Go with it
or
Part ways with him permanently
It seems like you're either jerking him around for attention, or you are slighly genuinely interested in him but put off because of the fact that he is 19. As I asked above, please elaborate on the reasons why you feel that way towards younger men, and in particular this younger man.