So, Jonah will come from San Diego to each party / event Zoey planning to participate to be her "beard"? Stop it already

She doesn't need such a legend and beard at all. If someone feels wrong vibes then it's their own problems. "Some dudes see signals when there are none, or maybe he was just shooting his shot at random." (c) Zoey
Jacob was the only one, who showed the relationship/sex interest in her. Other DIKs interested in her bc of her personality and because she is just cool to be around and party with. "A girl, but a bro". Some of DIKs are already in relationship (JB, Jamie, Tommy kind of), some of them haven't shown any interest in her at all - Nick (and he is in love with Heather) or Rusty at least. Jacob failed. Who remained? Leon? He likes to fuck and one night things, but nothing more and he also haven't shown a lot of interest in her.
Classic one "I don't want this, I don't want that". It's a plot and story which is not "branchable" for a tonns of reasons. All MGs supposed to be a close friends of MC and between each other. MC may avoid relationships with all of them if you want so, but not their friendship. What's the sense to complain and whining here and there how you wish something was different. Don't play or deal with it.
For the same reason, no book or movie or TV series will be perfect. There will always be moments that someone will not like, the main thing is that there are not too many of them or the whole product doesn't consist of "disappointments" for a certain consumer.