Most Helpful Guy
move on when you feel its right
Most Helpful Girl
It's Obvious he hasn't Completely gotten Over you as well, and isn't Done---Licking his Fresh War wounds, bringing you down to your Knees and to his level as well. He's trying desperately for You to 'Keep remembering' Him, and even with Another half, he most likely would only keep you on the sidelines as a------Friend with benefits factor, with or without the Newbie. He wants his cake and eat it too, to sort of say.
Yes, she is probably a 'Rebound Rebecca' and finds Qualities in her that he can't find with you, And-----Vice verse.
You've 'Blocked' him from Everything , so Get off His 'Twitter and Facebook' so he can Get off your back and you Both can move on. This situation will never change, just get worse, sweetie, and you may find yourself in a 'Triangle Threesome,' where you're at the top, looking down and side to side at the Two of them. Don't allow him to 'Screw you around' anymore.
He was trouble in the past, he's Double trouble now. Get your mind set on other sites and other things, like socializing Out of the house, and less time online...
I know it will be hard for awhile, but eventually with time, comes Strength, and in the end, when your heart has healed, you will be glad that things worked out this way.
Good luck. xx