To eat out with a girl is heavenly (6)
I believe the answer is:
divine
'heavenly' is the definition.
(similar in meaning)
'to eat out with a girl' is the wordplay.
'to eat out' becomes 'vine' (I can't justify this - if you can you should give a lot more credence to this answer).
'with' is a charade indicator (letters next to each other).
'a girl' becomes 'di'.
'vine' put after 'di' is 'DIVINE'.
'is' acts as a link.
Can you help me to learn more?
(Other definitions for divine that I've seen before include "Very good" , "Search for water with a rod" , "Supreme" , "Theologian" , "of a splendid nature" .)