Yes, they are goldfish, and that's not good writing at all.
About Tybalt, he makes of MC an eunuch with Jill. Tybalt's menace to sue MC forces him to let Jill, even if she's just a friend and not a romantic interest, to deal with that asshole and solve the problem for him. That's not what a real man (or woman) does, a man takes care of his own problems, not let a girl to pass for three humiliating dates with another guy for having his problems solved. I suppose that MC feels humiliated and insecure every time he thinks about Tybalt. But again, the whole scene is out of place, clumsy and lazy. There were better ways of resolving it.
For example, at some point during the party, after Jill and Sage become friends, Sage and MC could talk about Jill, and he tells Sage about Tybalt's menace and the three dates. Then, Sage would get angry with Tybalt for a real reason, sympathize with MC, and would decide to prank Tybalt kind of like a means to exorcise Tybalt from MC's mind. To make a clown of him in MC's mind, instead of the guy that menaced with ruining his life and made him behave as a coward with Jill.
And yes, probably all that drama around Sage's biological mother will be something like the infamous "Fuck, fuck, fuck" scene, that at the end was nothing if you didn't fuck Jade.
