Hot American group finding partner (7)
I believe the answer is:
husband
'partner' is the definition.
(I know that husband is a type of partner)
'hot american group' is the wordplay.
'hot' becomes 'h' (abbreviation eg on taps).
'american' becomes 'US' (abbreviation for United States).
'group' becomes 'band' (band can mean a group of people).
'h'+'us'+'band'='HUSBAND'
'finding' is the link.
(Other definitions for husband that I've seen before include "Spouse - save" , "M arried man" , "Partner in marriage" , "Farm" , "Partner; use carefully" .)