• Jacob was the only one worried about the MC and Sage at the party in Ep.2. For what reason? Does he have any connection to Burke?
• Jacob refuses to point fingers when the MC asks about a traitor among the DIKs in Ep.4 when Cathy's accident occurs, but he doesn't think twice when questioning the MC's loyalty in Ep.10;
• Jacob used his DIK code in Ep.5 for what reason? If the MC fucked Jade it makes even more sense for him to have a connection with Burke. He knows about the existence of the video and sent it to Stephen.
• Jacob acted suspiciously when he went to Sage's party with the MC. For what reason? Just afraid of Jocks or being recognized by someone?
1) Because Sage is still with Chad (at least formally). I suppose he didn't want MC to anger Chad as one of his first actions.
2) OK, this one is a bit stronger case. I assume blaming the new guy? Even though the MC proved himself, I would say...
3) MC doesn't have to fuck Jade so there is no video.
4) Because DIKs are pretty much at war with the Jocks at the time. If he didn't want to get recognized, he could have gone with the other guys to hit the bar (IIRC that was a thing).