Though I did not attend the particular wedding, I’ve witnessed something like this.
I was a bridesmaid at my cousin’s wedding, and heavily involved in the wedding. (I was the go to person the day of, so my cousin wouldn’t have to worry about anything and stress out)
Well, The wedding was at a hotel, and there were two weddings slotted to take place the hall we reserved that day. The wedding before ours that was supposed to have finished and cleared out before we got there was having a little trouble vacating our room.
Apparently, the groom never showed up, and the bride was insisting on waiting for him.
...later, while we were on site, the bride broke down and confessed that there never had been a groom in the first place. She just wanted to be married so badly, she planned the wedding and pretended the groom existed, and that he was just “too busy” to meet anyone or be involved in the wedding plans.
It was a very expensive delusion.
Not to mention it probably extinguished whatever marriage prospects she might have had.