Have you ever had sex with the man? I was pretty sure all my life that I’m lesbian, but 2 days ago I realised I have crush on my male colleague. I feel confused. And he clearly likes me back. What should I do? Am I bisexual? Or I’m a not real lesbian? My gay friends will hate me

Nope. I’ve never had sex with a guy. Stop stressing about putting a label on it and just follow your attraction where it leads. Sexuality is often fluid and sexual awakening is a journey.