I had a sexual experience with a woman in college one-time, copious amounts of alcohol were part of the equation. It just wasn't my thing. She was a pretty Argentine-American, blondish brown hair, green eyes...she'd always just been a friend. That night we were passed out drunk on my bed at my apartment...she hit on me and I guess I must have thought, what the fuck...
I have regrets, after the next morning we both sort of stopped checking in with one another and drifted apart. That sucked, but shit...20 years old is very young. It was awkward and we handled it poorly.
You did what you did. It's all part of growing up. Friendship is a big thing. But who is to say even if you didn't do what you did, you two wouldn't have drifted apart?
It is only later you think about friendship versus relationship. The one act differentiating.
We are play-doh. A clay. We mold, we form, we try our best fo find out what our shape is through constant handling. The people who hold back are held back but the people who experiment more can find more.
You may have never experimented with this lady & still drifted apart because life is an expanding universe that does drift apart but regardless, you know what you know because you did what you did.
Knowing more will always be paramount to knowing less.
I don't begrudge people who don't care to experiment but also I will never hold scorn for those who do.