Jacob's interactions with MC and Zoey are pretty shitty tbh. Yes, he asks MC but if you tell him "no" he first tries to go for technicality "but what if she hits on me" and then in the follow-up talk with Zoey he actually still hits on her despite getting a "no" from you. He just wraps it into a sleazy "oh, don't look at me like that, i promised Fuckface i wouldn't hook up with you, but i totally would otherwise" and when Zoey tells him he's off his rocker he still doubles down with the whole "oh are you sure, no way, we had the vibe going".Jacob is a true bro, he has your back and is honest with his intentions. It's pretty clear that he had a crush on Zoey right from Episode 10 on the "Rooster" post with the halloween pictures. I can't really blame him for it, I'm sure most of us have been there one time: someone we liked didn't like us back and we embarrassed ourselves as a result of pursuing things.
It's why I don't blame Jacob at all, he was upfront with his intentions and didn't go behind your back. Despite Zoey being an ex-girlfriend, he wasn't a snake like Nick who fucked Tommy's girl even if she came onto him.
For a guy who was given a clear "no" about pulling stuff like that, he very much stops only because Zoey tells him in clear terms she isn't interested. Some "true bro" indeed.