Are you all in, or do you keep your options open?

When I was looking for a girlfriend, I had two girls I was really interested in. One is my current girlfriend, and the other is still a close personal friend. Since I hadn't decided which girl I wanted to date, I was "flirting" with both of them until I finally asked one out. Then I immediately stopped flirting with the other one. Do other people do this? They show interest in multiple people until they decide on the one they want to go out with more and then quit with other people.

P. S. Not that it matters, but I feel kind of bad for the girl that I didn't ask out because I now know she liked me too. She told me and it was actually the reason why she didn't have a boyfriend the whole time I was flirting with her, she was waiting for me to ask her out (which, to be fair, I was considering).

Are you all in, or do you keep your options open?
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