Do you/have you ever left someone without saying anything?

same and its always the people i get along with TwT getting close to a girl *disappears* guy who is like a best friend *vanishes*

Have had it happen to me. I did do it once but I contacted the person and told them I was sorry within the week and gave them a proper goodbye. I was afraid to confront them as our friendship was emotional straining me but after I explained it was alright. I did have someone up and cut off all contact with me. I kept trying to contact them and ask if I did something wrong. Eventually I just wrote them a goodbye. It's tough but it happens. It even has a term "Ghosting"

If you mean leave them as a friend overall, then no I've never done that cause I always try to check in with certain friends after months. Even my best friend from primary school, after not talking for 4 years I messaged him to find we ended up growing up having things in common etc.

No. That's a bit too harsh for me to do. But I had it happen to me... I forgave them long ago though. Holding on to pain doesn't do anyone any good. It's pathetic, too.

No but that happened to me before. Contact just broke up and even though I asked that person about the reason I just got ignored. In the end it just helped me learn I guess. Social experiences