Did my friend actually turn gay or were they born gay?

"she experimented with a woman after she had a mental breakdown just to see what it would be like and she said it wasn't so bad".

I'm hetero but I would never describe sex with a woman as "It wasn't so bad". That describes it as being less than enjoyable, more like tolerable.

I think she's confused.

You can't just turn gay.

I’d worry less about which label she’s using and more about being supportive as she recovers from her traumas and figures herself out.

Born

Shes being a drama queen

Hah! How does one "turn gay"? Is that like a caterpillar that turns into a butterfly? No, it don't work like tgat honey. You're either str8, bi, or gay which can manifest themselves in phases. Some people go back and forth in their preference but they're the same person.

Maybe she’s just bi? I have a “lesbian “ friend but we sometimes hook up and I’m a guy

Born.

Sexuality is one of the most fixed things about a human.

This isn't as severe as what happened to your friend, but when I was a junior in high school, a guy that I really liked went out with me only to dump me the day after I gave him a "favor" he wanted. It really fucked up my perception of men, which made me become confused about my sexuality as well.

The next time I dated someone was during my senior year of high school, and she was a girl. At the time, I had been identifying as asexual and biromantic. I really truly felt romantic attraction to her. I'm positive about that.

The experience, however, did not change my attraction. Instead, my temporary aversion toward boys made me more aware of my attraction to girls. In hindsight, I was attracted to girls before the incident as well, but I failed to recognize it as attraction because I was in denial of my sexuality.

It's been 8 years now. I've realized that I'm not asexual, but I simply have a sex-negative mindset based on what I experienced. I currently identify as bisexual, which I think is the most accurate label for me. I still have crushes on girls, I still have crushes on guys.

Perhaps it's similar for your friend.

I think sexual orientaion is born and stuck. But trans is trendy in more places than not.

It could be just her choice. So?

Homosexuality is an issue of disposition. It can change just like any other disposition, to be rightly ordered or wrongly ordered. One is also born with set dispositions that can change. So it is not that one "becomes" a homosexual. Rather, their dispositions change that they feel inclined toward the same gender, and that can change back, of course. The same is true if one is born with an inclination toward the same gender; it can also change.

So, in that way, she has "become" a lesbian in that her dispositions are such that she feels attracted to the same gender as herself, when she did not before. Before, she possessed a disposition of attraction toward the opposite gender, thus she wasn't a lesbian. So, yes, she did "become" a lesbian.