As a single, young(24) male, I can honestly most singles aren't hated, but we are treated much more cautiously. We have to take the time to get to know the couple, unless they're just looking to score some for the wife/husband, and establish a report with them. That's something that's been lost for awhile in this country, sad to say.
Get to know them, understand that you won't be sexing them the first night or first month or whenever till they are comfortable with you.
That's my experience, anyway. Of course, being a single woman is much easier in this lifestyle than being a single male.