Hiding that I'm Bi

I am a biromantic person who was raised to be catholic(but I might be agnostic??? Idk), and I am confused about my mom's beliefs surrounding lgbtq+ people. I know for sure that both she and my dad dislike trans people. I feel like she has said and done so many contradictory things; for example, she has said that god made men and women for each other, and that there is something wrong with the minds of gay people, but she loves her gay brother very much.

She told me and my sister that she would still love us if we weren't straight, but also said she felt sorry for her friend when her daughter came out as bisexual.

She was close friends with a lesbian and a bisexual man before we moved. She went to a pride parade with my uncle, and she enjoyed it???

All of these things happened at different times over a span of years, and to me it seems like she has accepted homosexual people more over time. She actually hasn't made any comments hating on same-sex relationships for a pretty long time, but I know she expects me to be straight. She always says that one day I'll have a boyfriend/husband or whatever. I don't mind hiding that I'm bi since I'm not sure that I'll ever have a partner, but I'm scared of how she would react if she knew. I don't think she would hate me, but I feel like it would just make things weird. And I definitely don't want my other catholic family members to know.