Bi-Curious?

Okay so I have a boyfriend and I am completely in love with him. For a while now, I’ve been kinda crushing (I guess that’s what it would be) on this girl at cosmetology school with me. She’s lesbian and has a girlfriend but I feel kinda attracted to her. She’s super nice and I think she’s pretty and I’ve always been open about saying a girl is attractive. So I started thinking about previous “crushes” I’ve had. I would never date a girl I don’t think and I’ve always pictured my life with a husband and kids. (I’m from an extremely conservative state, hello Texas. And I honestly a conservative woman.) like I said I do truly love my boyfriend and I want to marry him someday, so is me thinking a girl is attractive normal??? Am I bisexual or is this just a totally normal girl thing?