A Lohan ``pal'' told the tabloid: ``Lindsay and Sam had a huge bust up last week at Pure night club in Las Vegas. Lindsay was flirting with a guy and Sam was ballistic. Lindsay says she loves Sam more than anything but she just can't help that she is attracted to the opposite sex. She thinks that they should come to some sort of understanding. Lindsay wants an open relationship where she can explore her heterosexuality without feeling guilty or sneaking around.``
Lindsay Lohan wants an 'open relationship'