BuyandSave
All Star
You're assuming that sexuality is as simple as that. There are some women who have tried women because they're tired of men or whatever. Those are the stupid and immature ones. But most if not all of them genuinely like women.
Personally, I'm under the belief that once you cross the line into bisexuality after you've discovered yourself, there's no real turning back. Girls telling me "I used to be bi" always gets the faces from me.
Over time people could truly develop feelings, both sexual and romantic, for people of the same sex, no matter what they did early on in their lives.
Are you a straight man? Take what you said and apply it to yourself, does it still make sense? That's how I gauge the women as well. As a man I can't imagine myself developing romantic feelings for another man or looking at another man in that way. I can love a dude like a brother but anything sexual is out of the realm of possibility. In my opinion, you are either gay/bi or you aren't. You can't "become" gay. So I don't get how you can just cross that line.