If someone says they're gay, it may be hard to tell if this is true or not. There are many stereotypes that have been portrayed in the media about what it means to be gay, and they can make it difficult to know how to act around someone who might fit these stereotypes.
For example, if someone is wearing a lot of makeup and watching RuPaul's Drag Race, it might seem like they are gay. However, these things aren't necessarily about sexual orientation. They could be about their gender identity, or how they choose to dress and present themselves.
Likewise, someone who is attracted to men could also be pansexual or bisexual, which means that they are interested in women as well. Similarly, someone who is a lesbian could be interested in women as well as men. So, while it is possible that someone might be gay, it's important to not assume anything based on how they look or their hobbies and interests.
Instead, the best way to determine someone's sexuality is to talk to them about it. It's also important to remember that sexuality isn't a choice and that everyone has the right to be happy with their own sexual orientation. So, if you're concerned about your friend's sexuality, you should encourage them to come out and be open with you about their feelings. If they aren't comfortable sharing, that's okay too.