Maybe three-love regarding this point (6)
I believe the answer is:
hereto
'regarding this point' is the definition.
'maybe three-love' is the wordplay.
'maybe' indicates anagramming the letters.
'love' becomes 'o' (In tennis, 'love' means 'zero'**).
'three' anagrammed gives 'heret'.
'heret'+'o'='HERETO'
(Other definitions for hereto that I've seen before include "Attached to this document, legal term" , "to this matter" , "To this place or time" , "In addition - till this time" , "The ore (anag)" .)