homosexual sex experience

I'm straight, but I've thought several times of having sex with a lesbian. My boyfriend told maybe I can go for it just once, and as long as I don't catch feelings for her it's all good. 
It's something that I want to do, more like a bucket list thing. Don't get me wrong, I just wanna know what it feels like to have sex with a woman I guess? 
Now I need advice. Because I don't know anyone who's homosexual (wish I did lol), how and where do I find someone for an experience? How do I initiate this? .....P.S I don't want to use anyone, but want it to be like a 1 time thing, like a 1 time fwb. 
Pls help!