What would you do if you found out he'd been playing away?

Give him his marching orders, pronto! Who wouldn't? Cheating is the ultimate betrayal and instantly equals the end of your relationship. You'd never stay with someone who was unfaithful.  

Or at least that's what you think, until it happens to you.

Because in real life, you might change your mind. It's impossible to know how you react to cheating until it happens. When can you forgive, and when is break-up inevitable? It all depends on the situation, your feelings and your relationship history.

We called in a psychotherapist to give our readers his expert opinion.

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