in order to love his wife, a man must have affairs.

Here are a couple of ideas.

After having an affair with his boss, a jaded accountant discovers a new found love for his wife, but to keep the spark in his marriage alive, he must become a serial cheater.?

Or

After having an affair with his boss, a jaded accountant discovers a new found love for his wife, but to keep the spark in his marriage alive, must he become a serial cheater??

Re: Tony Edward's logline:
I think it does the job. The paradoxical dilemma the philandering man discovers IS the dramatic problem. That's what happens in relationships: people find themselves having to juggle conflicting desires and demands. The conflict is primarily internal: the guy is his own worst enemy, his own antagonist.

Re: Tony Edward's logline:
I think it does the job. The paradoxical dilemma the philandering man discovers IS the dramatic problem. That's what happens in relationships: people find themselves having to juggle conflicting desires and demands. The conflict is primarily internal: the guy is his own worst enemy, his own antagonist.