Cryptic crossword clue
Changing to more modern, out-of-bed sort of romantic activity? 8

The most common and most likely answer to this crossword clue is the 8 letter word UPDATING

I've seen this crossword clue in The Guardian
U
P
D
A
T
I
N
G

Buddy explains!

The straight part
We know that "Changing to more modern" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case changing to more modern = updating.
The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.
This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.

What does UPDATING mean?

UPDATING verb
  1. To bring (a thing) up to date.
  2. To bring (a person) up to date: to inform (a person) about recent developments.
UPDATING noun
  1. The act by which something is updated.

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