I've been thinking while chilling in the they cast Ryan with a plan delusionland, but specifically what it would take to give Buck the most satisfying love story possible. Because Buck was written as the love interest. His purpose in season 1 is to give something to the main character. And ever since, he's been there to provide something to his love interests even though he's the main character now, he gave Ali a place to stay, he gave Taylor professional advancement (and this one is made worse by her book), he gave Natalia inside information on death, so he's constantly providing things without getting anything substantial in return, much like with Abby and the way that he was just a device to make her feel better about her life. And the main thing here is that Buck is being pursued in order to offer something. He's never the one to go after them, he's the one being chased in a sense, Abby calls him, Ali calls him, Taylor kisses him, Natalia asks him out, Tommy kisses him, so these people want something from him and they take it, most of the time without giving him something in return, Abby forces him to get closure by himself, Ali leaves him because she can't handle the job, where do I even begin with Taylor. So if you think about it, considering the initial way Buck was written, and the way they expanded this to the point that he was literally born to offer something to someone who provided him with nothing (in this case his parents), or the way Maddie shows up because she needs the safety he could provide (I'm not saying Maddie doesn't provide him with anything, I know she does so much for him, but she did show up because she needed a place to hide) his main love interest needs to be someone who's not asking him for stuff. And that's been Eddie since he was introduced. Under Pressure is about Buck choosing Eddie. Eddie tries, but when he realizes Buck is serious about not liking him, he validates Buck's feelings, granted in his sassy way of his, and backs off until he has a chance to give Buck the choice to let him in. You can have my back any day. The phrasing of this is great for the whole Eddie trusts Buck to take care of him, he's not saying he will take care of Buck, he's giving Buck the option of taking care of him. But the thing there is that he puts the choice in Buck's hands. Buck could've walked away. Even Buck's reactions to the way Eddie says it shows a moment where Buck is considering before offering the or you can have mine. The metaphor surrounding the rescue in this context is interesting because while Eddie is choosing Buck right there, he's not forcing Buck to step in. Much like the ambulance, Eddie is offering himself, but he's not forcing anyone to go into the ambulance and risk getting blown up with him. Buck needs to volunteer. And he does.
I know the fandom loves to say Eddie baby trapped Buck, but Buck was the one who took one look at Eddie and said I'm stepping in with you whether you like it or not. Eddie never demanded anything from Buck beyond for Buck to be himself. He never asked for help with Chris, Buck chose to talk to Bobby to clear him being at the station, Buck chose to trick Eddie to offer him help in the form of Carla. Sure, when it's convenient for the plot, Eddie will just decide on things, but like, even the lawsuit of it all, when Eddie is inserting himself into the conflict, Buck is ready to be forced to provide Eddie with something to be forgiven "so whatever it takes for you to forgive me" but Eddie is instantly "I forgive you" because he doesn't need for Buck to prove himself. Over and over again, the show puts Eddie in a position that shows that he just loves Buck. No matter what. He never asked Buck to provide him with something. I think even the will and the way Eddie hides it plays into this. He doesn't want to ask for Buck to do this. Eddie knows Buck will do it, he knows how much Buck loves Chris, but the will reveal is not really about Eddie asking Buck to do something for him, taking care of Chris if he can't because the episode already showed Buck doing that without knowing that was what Eddie wanted, but to give Buck that shock that he does have something to live for, that he matters, that someone loves him. Eddie exists as the person that allows Buck to make his own decisions. He does push back when he thinks Buck needs that push but he doesn't make the choice for him. Even if Buck ever decides to walk away from him, he'll let him if that's what Buck really wants, because ultimately it will be Buck's choice and he respects that. And ultimately, with the archetype they had in mind when they created Buck, that is what Buck needs for him to be in the most satisfying romantic relationship narratively. Buck needs someone who loved him before they were in love with him. And that is the work they have been putting towards buddie since Eddie was introduced. And that's also why Buck is the one who needs to start his endgame relationship. It's never gonna feel right until Buck chooses to do something about it because everything about him is about someone else making the choice.