The most common and most likely answer to this crossword clue is the 7 letter word LIAISED
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More clues leading to the result LIAISED
Buddy explains!

The straight part
We know that "had close relationships" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case had close relationships = liaised.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.
What does LIAISED mean?
LIAISED verb- To establish a liaison.
- To act between parties with a view to reconciling differences.
- To cooperate, consult and discuss in order to come to a common solution.