You may want to start asking your date how many siblings they have.

How many siblings do you have?

Because that number may determine exactly how likely you are to cheat on your partner.

A survey conducted by SeekingArrangements.com of 430,000 people has ranked those most likely to cheat according to the number of siblings they have.

Here are their findings:

“Everyone automatically assumes that it’s the man that you have to keep an eye on when it comes to infidelity, when you really should be checking if he has any brothers or sisters,” site founder Brandon Wade said in a press release.

http://ivillageau.s3.amazonaws.com/wp-content/uploads/files/2015-05-25_12-00-45.jpg "You really should be checking if he has any brothers or sisters..."

“Only children have the stigma of growing up quite lonely with the automatic tendency to fill that void. One has to believe that these habits transgress into all of their relationships, romantic included," Wade continued.

Don't say we didn't warn you.

SCROLL THROUGH the gallery for celebrities who have allegedly cheated and how many siblings they have...

Brad Pitt.

Ashton Kutcher.

Kris Jenner.

Claire Danes.

Jude Law.

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