Halloween costume ideas for a couple?

My bf and I are going to a fancy dress Halloween party and want to go as a ‘couple’. We have been Frankenstein and his bride before, but can’t think of anything for this year. We are both pretty good at making costumes, as long as they’re not too complicated. It’s in England, so the costumes MUST have a scary theme (unlike in US where any costume goes, I think)

Any ideas?
There’s only Proximin that’s suggested anything scary.
Not meaning to be ungrateful, but you haven’t read the question, the rest of you!

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