Lively man I am going out with - a new date (8)
I believe the answer is:
animated
'lively' is the definition.
('animated' can be similar in meaning to 'lively')
'man i am going out with a new date' is the wordplay.
'i am' becomes 'i' (I've seen this in other clues).
'going out' indicates an anagram (out can mean wrong or inaccurate).
'with' is a charade indicator (letters next to each other).
'a new' indicates anagramming the letters.
'man'+'i'='mani'
'mani' with letters rearranged gives 'anim'.
'date' is an anagram of 'ated'.
'anim'+'ated'='ANIMATED'
(Other definitions for animated that I've seen before include "put in spirit" , "Vivacious in diamante" , "in cartoon form" , "Enlivened (like a cartoon film)" , "Lively - like cartoon films" .)