He can't love, fake and betray (5,2)

I believe the answer is:

cheat on

'betray' is the definition.
('cheat on' can be a synonym of 'betray')

'he can't love fake' is the wordplay.
'love' becomes 'o' (In tennis, 'love' means 'zero').
'fake' indicates an anagram.
'he'+'cant'+'o'='hecanto'
'hecanto' anagrammed gives 'CHEAT ON'.

'and' is the link.

(Another definition for cheat on that I've seen is " Be unfaithful to one's partner".)

I've seen this clue in The Telegraph.

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