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When you think you are 'straight' and meet someone of the same gender/sex that you seem to be attracted to in a romantic or sexual way. Can vary from person to person.
I've never really been attracted to girls, but this one seems like a Light Bulb Crush.
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by Quin McGuire June 02, 2018
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The initial crush that makes you realize you’re not 100% straight.
I wasn’t sure if I liked girls, but Jamie was my lightbulb crush that made me sure I did.
by Gayqueeeen June 04, 2018
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