New couple getting away? Someone horny after some swapping (12)

I believe the answer is:

honeymooners

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'new couple getting away?' is the definition.
I can't tell whether this definition defines the answer.

'someone horny after some swapping' is the wordplay.
'after' means one lot of letters go next to another.
'some swapping' indicates an anagram (I've seen 'swaps' mean this).
'someone'+'horny'='someonehorny'
'someonehorny' is an anagram of 'HONEYMOONERS'.

Can you help me to learn more?

I've seen this clue in The Guardian.

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