Cyprus is in Europe. Your concept of Cyprus being in Asia used to be funny, now it's just boring. It's a form of trolling your users, really, isn't it?
It's consistent, and that's what people expect on a site like this. Once you know this site considers it to be in Asia, then it's in Asia on this site. You can argue it one way or the other depending on criteria, so there's no need to throw your toys out the pram about it
Not to be pedantic (ok, maybe a little bit), but the European part of Turkey borders the Black Sea. I wouldn't necessarily think of Turkey as a European country (and it generally isn't on this site), but a portion of the country that borders the Black Sea is "in Europe" as the question asks.
My understanding is that East Thrace --the European part of Turkey--borders the Black Sea; and that the part of the Black Sea that borders East Thrace is also part of Europe.