Again, why would you want to? I don't know about anybody else, but I would never stay in a relationship where I had to be a "secret". It's unhealthy.
If I enter a relationship with a girl the first question most people will ask is "Are you gay or bi?" I really don't want to answer that question until I know who I am for sure.
Nobody has ever asked me if I were bi when I dated women. They just assumed I were gay. The only people that asked me if I were bi were perverted men wanting a threesome, but that didn't mean much to me.
I don't think it matters how femme you are, most people assume that two women together = gay. Bisexuality is usually invisible unless someone comes out and says it. Besides, I don't think I'm the most masculine looking person either. I might dress more tomboyish, but I definitely have long hair and a larger breast size. Everyone assumes that I'm straight until I say otherwise.
I care about coming out accurately. If I come out as gay and end up falling for a guy I'll just promote the myth that lesbians can turn straight. I'd rather not do that.
Then hold off on relationships until you get to know yourself better, and then you can come out before starting one.
I can't "get to know myself better" without a relationship or at least dating. I've tried to do that, but I failed. I just keep going in circles. I think femmes like me also need proof before they come out. My preferred way to come out is to start a relationship. I won't tell anyone about it, but I won't try to hide it either. Than people will probably gossip a bit about it. After they gossip and I figure out exactly who I am I will come out. By then people won't have any reason to doubt my sexuality.
