The most common and most likely answer to this crossword clue is the 3 plus 5 letter word GET ALONG
I've seen this crossword clue in The Guardian
G
E
T
A
L
O
N
G
More clues leading to the result GET ALONG
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.