I'm obsessed with Les amis polycule but I don't believe that all of them would be dating each other so here goes my headcanon of how that polycule works, kinda:
Enjolras: they're dating Grantaire, and have a queer platonic relationship with Feuilly, which makes both their aroace asses very happy. Sometimes they fuck with Courfeyrac and Bahorel, but there's no romance there. They are a bit (okay, a lot) in love with Combeferre, and they act like an old married couple, but it's taking them a bit to figure it out.
Courfeyrac: he has kissed ABSOLUTELY EVERYONE in Les amis, and fucks most of them regularly. He's formally dating Jehan, Combeferre and Marius (only link he has with the polycule).
Combeferre: somehow Courfeyrac dragged him into dating him and Jehan. Sometimes he fucks with Grantaire, who is having the time of his life watching him figure out that he wants to date Enjolras in a less platonic way.
Jehan: dating Combeferre, Courfeyrac and Bahorel. They've tried to seduce Grantaire at some point, and although it hasn't worked sexually, there's something definitely not strictly platonic in there.
Grantaire: dating Enjolras although he still doesn't know how, and regularly fucking Ferre, Courf, and sometimes Joly Bossuet and Musichetta at the same time. Or whoever would have him, really. In a weird platonic relationship with Jehan, and probably starting to catch more than platonic feelings on Ferre.
Bahorel: dating Jehan and Feuilly, although there's not a lot of sex involved with this last one since he's not super into it. Frequently fucking Enjolras, Courf and Bossuet.
Feuilly: his aroace ass doesn't really care for tags, but one could say he's dating Enjolras and Bahorel. Platonically up for everyone, but prefers to be left alone sexually.
Joly: obviously Bossuet and Musichetta, sometimes adding Grantaire to the mix. He has had flings with Ferre at times, and obviously with Courf.
Bossuet: Joly and Musichetta, sometimes adding Grantaire to the mix. He's had flings with Bossuet and Courfeyrac
Not adding Marius (who's dating Courf and Cosette), Cosette (dating Marius and Ponine), Éponine (dating Cosette and Montparnasse) and Montparnasse (dating Éponine and Jehan) to keep it strictly amis.
Sorry about Joly and Bossuet they're always the hardest to headcanon
