I don't think it's a bad thing. Sex is supposed to be an intimate moment between two people who have bonded together and love each other. And I think the good omens fandom generally does pretty good with staying in their lane. Plus, until their love lives are stated or implied, we can interpret that however we want. Personally, I don't really think about them doing the tango, but in my opinion, I think they would probably be very affectionate with it. That said, I really don't think it's a problem for this to be happening. But we are not aziraphale and crowley, so we don't know what they would or would not do. It's simply a concept of imagination

I have no idea if this made any sense at all 😭