Well for a while now ive been thinking about why CM Punk would join Nexus and/or why Nexus would let him, and it got me thinking, but there have been a few things that i beleive could show that CM Punk wasent just randomly added too the Nexus.
Here are some weird thing they had/have in common.
1. Nexus debuted through a match between CM Punk vs John Cena?

2. It was after ...