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Tinder can be a tricky game, so when one woman went on the perfect date she thought that was it.

When Alita Brydon got home in the early hours after a brilliant night out with her match, she was lying in bed and thought he was "The One".

They had been exchanging "personal, intimate, yet so mundane" messages for a while, but living two hours apart meant it was tricky to arrange a meeting.

They talked about films they loved, and exchanged step-by-step photos of the meals they prepared for dinner in the evenings.

(Image: Twitter/@aalita)

And then finally their diaries matched up, and they arranged to go for a drink.

Writing for MamaMia , Alita said: "I saw him confidently approaching me, striding past the Asian grocer, the dingy Chinese takeout.

"Without saying a word he laid his lips on me, laid his palm on my lower back and kissed me. It was happening. Everything was coming together."

They had a great night out and Alita went to bed filled with hope about the future - she even thought he was 'The One'.

When she woke up the next day she looked at her phone hoping to see a message from him.

But there was another message instead.

"Stay away from my boyfriend."

(Image: Getty Images Europe)

Alita was completely shocked - she had accidentally become the other woman.

She replied and said she didn't know who she was, and the woman quickly explained everything.

They had met after Alita had matched with him and been dating since.

He had met her family and they were planning to move in together. He had even bought a ring.

Alita said: "I would never pursue a man who had a partner. And I would do anything to undo hurt caused to the woman I upset. But I did not know. So, all I can take from the experience is a piercing and cold lesson. Be careful who you trust."