If dating site for gamers site keeping idea of making conversation in large groups or going up to strangers is your personal idea of hell, there are dating services out there that cater to your specific needs. If you do come across suspicious profiles, requests or behaviours then report them to the site.
We often come up with an idea for how someone will be after meeting them online, and it's rare that our expectations sync up with reality. If you are serious about applying to join the club, be sure to take a careful look into your social media accounts.
A good line to use is something like, "I've really enjoyed meeting you but I think there are probably better people out there for both of us.