Male friendship beginning to bother Catholic Church (8)
I believe the answer is:
bromance
'male friendship' is the definition.
I know nothing about this answer so I can't judge whether it can be defined by this definition.
'beginning to bother catholic church' is the wordplay.
'beginning to' indicates taking the first letters.
'catholic' becomes 'roman' (Roman Catholic is an example).
'church' becomes 'CE' (Church of England).
The first letter of 'bother' is 'b'.
'b'+'roman'+'ce'='BROMANCE'
Can you help me to learn more?
(Another definition for bromance that I've seen is " Platonic love between chaps".)