e-cquaintance - A friend you only know through online chats, but would never

A friend you only know through online chats, but would never be caught dead talking to them in real life.

'She’s my e-cquaintance. We’ve talked 100 times, but if she walked up to me in the mall, I’d probably say, 'Who the hell are you?''

'He’s my e-cquaintance. He’s on my Facebook. That’s it.'

'We only chat online. If I saw her in real life, I’d probably run.'