Notice whether or not they talk about being LGBTQ, liking someone of the same gender, and notice if they are sad or disappointed with homophobia or hurt by homophobic insults/slurs.
Be friends with them because of who they are, not just because you want to know what their sexual orientation is. If you already are friends with them, that’s the first step of knowing if someone is heterosexual/straight.
For example, could also be pansexual, bisexual, asexual, or still in a secret relationship with someone. Don’t assume that just because someone dates the “opposite gender” that they are straight. It is as normal to be attracted to the same sex as to the opposite sex. [1] X Research source If you want to know where a person is on the sexuality spectrum, you may consider their attraction towards the other gender or same gender when they fantasize, have relationships, or express affection. [2] X Research source Maintaining curiosity and working from what they feel instead of what they feel is acceptable in society is a good way to know where they exist on the spectrum. [3] X Research source
