Could a cheater be born a cheater? That's what new research is claiming, saying a man's tendency to be unfaithful may be influenced by his genes.

The study published in the journal Proceedings of the National Academy of Science, claims that a certain genetic make-up could affect an important attachment hormone which prevents a man from establishing strong relationships and getting married or could make them less likely to be monogamous."

Dr. Phillip Muskin says this so called "cheating gene" could make a man more vulnerable to be unfaithful, but it doesn't necessarily mean he is unable to maintain a monogamous relationship.