rangatarian
A Rangatarian is an individual who has a ginger-specific sexual appetite, and is therefore only going to pursue sex partners that are redheads (aka "Ranga", as in Orangutan; having hair like). A person can have a Vegetarian food diet, and so similarly a person can have a Rangatarian sexual diet. Sexual Orientation: Rangatarian.
"The ginger bartender from last night was a total wanker, but he must've known I was a Rangatarian, so he knew I'd still have awesome sex with him, and so I did, and I'd do it again, and again..."