Prongsfoot and they’ll make out and sleep together but they genuinely think it’s just as friends and they don’t have romantic feelings for each other (they do) and then when James gets with Lily they’re still sort of emotionally cheating (which James doesn’t even realize because he would never ever chat on Lily Evans (or so he thinks)) and sirius realizes quickly that oh my god he’s in love with James but now it’s too late they’re getting married and sirius is the best man and also their babies godfather
















