So I am bi and I have a girlfriend even tho I do prefer boys, but of course as a bi person that attraction to women is still there

But people in the LGBTQ community have been saying that since I have a preference for boys I am “technically straight” and that I am not part of the LGBTQ community

Or they will say I am only valid if I have a girlfriend, if I have a boyfriend that somehow makes me not LGBTQ anymore

And idk I am relatively new to all of this so I have to ask, am I valid?