Kester: Whatever situation you find yourself in — there is always, always, ALWAYS a way out. Yeah? I'm not going to leave you and I'm not going to give up on you. And your dad did whatever your dad did. Not because of anything you did. And not because of anything you are. So you can't spend the rest of your life being afraid of people rejecting you and you have to start by not rejecting yourself. You don't deserve it. So from now on, people either accept you for who you are, or they can fuck off. Because you're an amazing person, Rae.
Archie was worried how Finn would react to him coming out. This was Finn's reaction:
Finn: Just tell them, Arch.
Archie: You know?
Finn: Of course, I know. You're my best mate.
Archie: You never said anything.
Finn: Neither did you. Listen, it's- it's your business.
Throughout the first season, Rae viewed Karim, her eventual stepfather, as a puzzling annoyance and had little to do with him. In the second season, it becomes clear how much he truly loves both Linda and Rae. Like Finn towards Rae, he doesn't understand why anyone would think he could do better than Linda, because, to him, Linda is the best. Moreover, it's clear he doesn't see Rae as the troublesome kid he must endure if he wants to be with her mother but rather as an important part of his new family he loves and wants to protect and make happy.
The ending to season 2. All of it. Season 2 was a phenomenal downer, from Rae and Finn's breakup, to Rae's panic through college, to the breakdown of her relationships with family and friends, especially Chloe, to Archie's struggles with bullying over his sexuality. For everything to just end up so well is a gigantic relief. Special mention to Rae finally being able to take her clothes off in front of someone - Finn.