Bother, these days, with love (3)
I believe the answer is:
ado
'bother' is the definition.
(thesaurus)
'these days with love' is the wordplay.
'these days' becomes 'ad' (as in Anno Domini, after Christ).
'with' means one lot of letters go next to another.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'ad'+'o'='ADO'
(Other definitions for ado that I've seen before include "stew is provided" , "Fuss, bother" , "Hoo-ha" , "flapping" , "'Much ... About Nothing, Shakespeare play (3)'" .)