Crushing on a girl?

I’ve been with my boyfriend for almost 3 years and he’s great. He’s so smart, handsome, has my sense of humor, and is incredibly patient with me. 10/10 would marry this man.

But there’s this girl at work who I can’t stop thinking about... I’ve even dreamt of her twice! One was sexual.

I’ve never been with a girl and I thought I was straight but clearly I’m a little curious.. I keep thinking of scenarios where bump into each other and make out.

So give me your thoughts & input. what should I do? I don’t want to ruin things with my man, and I don’t want to do anything to hurt him.

Should I just bury the fantasy?