How to tell your crush that you're bi?

I have a crush on somebody that I work with who is gay and nonbinary. I've had a chance to work with them a few times and we just click. I sort of flirted with them a bit the last time we worked together but I don't know if it played out that way or not. Either way, they're really easy to talk to, we have a lot in common and honestly I think there's a good chance they couuuuuuld like me back?

Problem is they don't know I'm bisexual, and I'm still in the process of coming out. I've told 5 people so far and while I'm open about it with them, I'm not completely out yet so it's not something that will likely just come up in conversation or that I am public with on social media or anything. And especially because I'm a cisgender female and I think it's still pretty typical to assume heterosexuality, I don't think there's any way they could know unless I told them. I want them to know so in the chance that my feelings are reciprocated at least I'm on their radar. I realize that I could also just ask them out myself, but since we work together AND its my first real same-sex crush, if I got turned down it would be both heartbreaking and awkward.