sometimes i think about how jake is a pretty competitive, driven character (the bet with amy, the halloween bets with holt, the eps from earlier seasons where he’s always trying to do his best + win + prove his worth), but even from the start he never truly let that get in the way of his support and care for the squad and esp for amy.
as early on as season 1/operation broken feather he wrote that recommendation letter for her because at the end of the day, he had her back, he respected her as a partner and a friend, and he wanted her to succeed. and that same support continued all the way to season 4, his line “i’ve always known you were gonna be my boss” was like. so representative of their dynamic and his love/respect for her, and how nothing else really tops that.
he let go of the bet of who’s going to move into the other’s place because he cared about her more than winning it. when amy won halloween III even when he almost got in over his head, he was apologetic to her, then proud and happy to crown her the queen of the 99.
esp. important i think seeing as he’s the main male lead of a comedy show in a central pairing/relationship, and he has never once felt truly threatened by her accomplishments, and never once genuinely put his own competitiveness or pride before her wellbeing. their relationship has never fallen to the “man unhealthily jealous/threatened by his girlfriend/wife’s accomplishments” or other countless similar tropes. he loves her and at the end of the day that’s what matters to him the most. and he knows she’ll make a great sergeant and we all know he’s going to be with her every step of that path.