One of the largest dating sites in the world, its Quickmatch function lets you filter mats based on photo, age and location. Like Tinder, you swipe right to "like" and left to reject.

Naughty Teacher!

You can also access your message inbox and have a more in-depth browse of potential mats. Also, mutual "likes" are not required for direct messaging, so any user can drop you a line if they want to.