Thus guy embracing one, getting friendly ... (8)
I believe the answer is:
sociable
'friendly' is the definition.
('sociable' can be a synonym of 'friendly')
'thus guy embracing one' is the wordplay.
'thus' becomes 'so' ('so' can be a synonym of 'thus').
'guy' becomes 'cable' (I've seen this in other clues**).
'embracing' is an insertion indicator.
'one' becomes 'i' (Roman numeral).
'cable' enclosing 'i' is 'ciable'.
'so'+'ciable'='SOCIABLE'
'getting' acts as a link.
(Other definitions for sociable that I've seen before include "Fond of others' company" , "Marked by friendliness" , "Fond of mixing with others" , "Friendly and pleasant" , "Easy in company" .)