Not having any references, and being young, is.
You should join one of the screening services, get verified by your employment, then contact like 5 girls of your choice. I wouldn't tell her you've never been with a girl before since most girls will see that as a turn-off, but you should be upfront that you're a newbie in the hobby and young. As far as who you like in your personal life, that is no ones business but your own.
If she needs your business, she may give you a shot. If she's busy with others, she'll probably pass- don't take it personally. 4/5 will probably pass on you since you're young.
Just walk in the session and trying kissing- see if you have any physical reaction to her. If you don't react to her, just leave the entire donation, tell her you're too nervous, and then maybe you know that you are truly not into girls. Embrace being gay. Gay men are HOT commodities esp in NYC. It's no longer something to be ashamed of.
*Edit: if you're in college and don't have a job or much money, skip the first part of my advice and to backpage. Amateur escorts don't have as strict standards in screening as pros do. Maybe start there.
-- Modified on 3/27/2015 12:28:32 PM