since we have only one part of this supposedly real situation:
4channers always loose and this one did as well, how dare this woman wanting an actual friend
and of course this weirdo assumes it was totally flirting
Some people just come across as flirty. It usually isn't deliberate and if you mistakenly interpret it as flirting that's fine. Just don't get all butthurt about it when it turns out they weren't flirting with you like OP and then it's no harm no foul.