OP here.

Thanks. The only other thing I'd heard about it before all this was "She's a bitch, how could she do that?" which wasn't really advice.

I'm a bit weird for needing to understand things. It's much easier, for example, for me to accept a mathematical formula if I'm shown a proof from something I know. When she first told me what had happened, she said that she still loved me. He didn't mean as much to her as I had, but she needed to take the chance. I don't think that until I see her face to face and get it all sorted out, I'll be able to sever all connections. Simply because I tried it, and all I did was open them right back up again.

I go to a private school (it's not posh, just likes to think that it is) and so I'm gonna spend more time on the boarding house. Even though I only live about a mile away. I'll be sharing a room with one of my good friends and he helped me take my mind off it last time, I've been a bit down this week because I've had a week long holiday with nothing to do and it's brought my mind back to her. So if I'm staying there during the week then I can't get on facebook or any IM client because of the school filters. If I can keep away from both of those during the week, I should be okay. Until I'm ready to finally sever the connections.

Thanks again for all the help, I just needed someone else to back up what I thought. Going back a month, it would have been her job. But obviously she's the last person I want to know about all of this.