After my dad died, my brother told me he was gay. How should I handle this?

I apologize if this is the wrong sub for this post. My dad passed away about 3 weeks ago, and while staying at my brother's house to help cope, he explicitly told me that he is gay. I was pretty surprised, as he has been viewing gay porn since he was boy, but I just thought that was a weird hobby. Since I was in shock about my dad I didn't really have time to processmy brother's statement. Now I'm thinking about it a lot, and I am confused because he has a long term girlfriend(5 years). I feel like I don't know him at all even though he is the only family member I have. Should I ask him more questions, or how should I approach this topic. I don't want to make him uncomfortable.<br><br>&#x200B;<br><br>Edit: I didn't handle this very well. I did ask him a couple questions, such as if his girlfriend knows. She does and she's not gay. He said they're just "compatible sexually". I'm not good at navigating these topics, and I told him that I wanted to process my grief first. I also told him I needed some space and that he can reach out later if he wants to talk. I moved out and I don't have any plans to contact him. I'm a little upset that my brother thinks that I would be repulsed by this. <br><br>I still live in the same city. I really don't want to be in his life anymore.