It pains me to kick out rector in Hertfordshire town for kissing (8)
I believe the answer is:
touching
'for kissing' is the definition.
(kiss can mean to lightly touch or brush against)
'it pains me to kick out' is the wordplay.
'it pains me' becomes 'ouch' ('ouch' is said when in pain).
'to kick' becomes 'ting' (I can't explain this - if you can you should give a lot more credence to this answer).
'out' is an insertion indicator.
'ouch' inserted into 'ting' is 'TOUCHING'.
'rector in hertfordshire town' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
(Other definitions for touching that I've seen before include "meeting ..." , "feeling" , "Pathetic" , "Moving; in contact" , "Arousing feelings of sympathy or gratitude" .)