... because taking drug after bit of lovemaking results in calm (7)
I believe the answer is:
silence
'calm' is the definition.
(I've seen this in another clue)
'because taking drug after bit of lovemaking results' is the wordplay.
'because' becomes 'since' ('since' can mean 'because').
'taking' is an insertion indicator.
'drug' becomes 'e' (E is another name for ecstasy).
'after' is a charade indicator (letters next to each other).
'bit of lovemaking results' becomes 'l' (I can't explain this - if you can you should give a lot more credence to this answer).
'e' put after 'l' is 'le'.
'since' enclosing 'le' is 'SILENCE'.
'in' acts as a link.
Can you help me to learn more?
(Other definitions for silence that I've seen before include "Secrecy; stillness" , "Quiescence" , "There's nothing heard" , "It is golden acccording to the 1960s song" , "Absence of sound" .)