New York, July 3 : Jennifer Aniston who is dating actor Justin Theroux has admitted that she is really choosy when it comes to relationship.The actress said that love rarely happens and it happened to her only twice in the past 10 years."I'm really picky; when I feel it, I feel it. It's rare that it happens. In the last 10 years, it's happened twice ... there are all sorts of things that are