Telling girl I'm bi

This girl I'm talking to told me on the first date she's bi (I am too). But I was reluctant to tell her I was as well. I would think this wouldn't change anything between us but for some reason, I have a thought in the back of my mind she'll reject me or feel weird about dating a bi guy.

For a little more history, I've really only been with guys recently but I've been talking to her for a few weeks and she's really cool. I don't want to hide my past with her but not sure how she'll feel she's one of the few women I've tried dating.

I'm probably overthinking this but just want to approach telling her the right way.