Don't we wish life were that simple!! The simple answer is no.
But swingers have great relationships but enjoy other sex partners. Some partners will condone relationships that provide thrills outside marriage. For example, didn't Mitterand's mistress turn up at Mitterand's funeral and stood by Mitterand's wife? If the president of France can have a mistress and a good relationship with his wife, can't others?
Aren't there some religions that allow multiple relationships (eg. extreme Morman secs).
So even though the simple answer is "no, cheating is not allowed", let's not think that extra-relationship flings are absolutely taboo - it depends upon the cultural background, understanding, honesty and openess of the relationship.
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