I am confusion

Ok sooo let me start this with I’m fairly ignorant to the idea of being gay...please don’t come for me or get offended... so I like guys and I know that...however I think I might be gay for just one person? I feel like that’s normal but is it really? A while ago I was friends with this girl and she’s been out for years & would joke that I was her “girlfriend” and I kind of always had a little crush on her but never really took myself seriously I guess. We recently started talking again, but not as just friends anymore...we made plans to go on a date and I guess I’m confused. I couldn’t see myself doing this with literally any other girl... am I bi? Or what bc ¯\_(ツ)_/¯