He's got mental health / anger issues so bad he needs a support system to get through everyday life and has almost no friends apart from Marco. Sure he may be a prince and is canonically handsome as hell but he's not quite the chad he tries to act like.
He needs a chill, supportive and understanding gf. He gets best along with Marco, but I doubt Tomco will be endgame due to it being a) gay b) interfering with starco, so Jackie is the most logical option, seeing how she can coax even Marco out from his sea of spaghetti with her effortless kindness and chill
(repostan with the correct linking)