​Cristiano Ronaldo might be one of the greatest footballers of all time and live a privileged life as a result, but even he experiences the odd family fall out - he's probably well within his rights to lose his sh*t at this one, though, and here's why:

His sister, Katia, and poker player Claudio Coelho, made the most of their time together early on in their relationship with regular sex sessions - IN RONALDO'S ACTUAL BED.

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Ya know, that place where Ronaldo sleeps. In that multi-million euro home he loves to spend his time in with his young son. The revelation came from Coelho himself while speaking on ​Portuguese reality show Casa dos Segredos, and Ronaldo is believed to be absolutely irate upon finding out about his older sister's antics.

Coelho said: "It is normal for Cristiano not to like other people occupying his personal space. I understand him fully. But the problem is that his sister has little judgement, despite being almost 40-years-old."

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To make matters worse, the poker player admitted that it was in CR7's bed that the couple first did the dirty. 

He continued: "Katia and I were visiting the Geres area, and spent the weekend at Ronaldo’s house. That was where we slept together for the first time."

Ronaldo and his sister, who is also a pop star (see her latest single starring this Poundland Sergio Ramos below), are known to disagree on certain things, but as unreasonable as the Real Madrid man comes across sometimes, you can't help but side with him this time around.

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You can only hope they changed the sheets after they'd finished up...

If you'd like a closer look at Ronnie's rather crazy sister, scroll on down.

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