Unknown groom, endless Aisle, and the wedding You didn't choose

"So I'm sitting in this church, or maybe it's a banquet hall, honestly it kept switching, and I'm wearing a white dress. But like a casual white dress. A sundress. And everyone else is in formal stuff, tuxes and gowns and hats, and I'm looking around like "did I miss a memo" but also "wait am I the one getting married?" The groom was there. I think. There was a guy at the front in a suit and he kept looking back at me over his shoulder with this encouraging smile, like "you got this," but I didn't know his name. Like genuinely did not recognize him. And I'm trying to figure out if that's a problem. Is it a problem that I don't know the groom's name? In the dream I decided it was fine. Probably fine. My mom appeared and started pinning something to my dress, a corsage, but it was made of those little soaps from hotel bathrooms. I remember thinking that was weird but not saying anything. Then she was gone. Then the aisle was really long, like comically long, stretching out into fog, and I started walking but I couldn't tell if I was walking toward the front or away from it. Both directions looked the same. Somebody was playing the wrong song. Like a birthday song? At a wedding? And people were humming along anyway and I'm walking and walking and the groom is still smiling and I'm still like 90% sure I'm not supposed to be here. I looked down and my dress was blue now. Then white again. I gave up trying to track it. I woke up before I got to the end of the aisle. First thing I did was check my left hand. No ring. Obviously no ring, I'm not even dating anyone. Lay there for a while trying to figure out who that guy was. Never figured it out. But I still feel vaguely like I stood someone up. Sorry, mystery groom."