So I found a partner, went to riften and now there's no marriage dialogue with maramel.

I did hear his spiel in the tavern,

I bought the amulet then and there,

I wore it and propositioned,

and now he has no dialogue about a ceremony.

Wait 24 hours and ask him when he's back at the temple, might work.

If you have picked up other amulets of mara(in chests or on dead bodies), those can prevent maramal from having the speech option. Drop any amulets of mara you have and speak with maramal again. Worked for me.