I'd think women are, in general, more open to bisexuality than men are. With this said, I don't think you will have to find someone who considers themselves bisexual. Just stick to the material you have on this site, demonstrate higher value etc. and you'll be set. You will probably need to make up some new material too though, seeing as there is pretty much none that helps you handle ladies freaking out over being kissed by another girl etc.
Now, I'm not saying that every single girl is open to bisexual experiences, but I think you have a lot better odds than a gay guy hitting on other dudes.
I'm not really a professor on the subject or anything and I might be completely wrong, but I wish you the best of luck.
