There’s an easy way for them to disprove what you say. Let’s have a link to that other forum site so we can see the posts where they met and view the date and times on them.
Hey Wiggy. How about it? What forum did you meet on? Oh that's right. He saw your posts and PM'ed you. No public conversation. Hmmm.
Good luck getting that one out of them.
http://www.freerepublic.com/focus/bloggers/2457491/posts?page=2491#2491
The troll claims he met the other troll on another forum via private message.
No way to prove or trace it, no link to show to prove it.