Recently, I've had a very brief long distance thing with someone and it didn't work out very well. We ended on good terms, I think. I intended to stay friends with the person, but today I realised, "wait, this is only causing me more anxiety" and decided to deleted him right away. I wasn't even angry. It was just sort of uncomfortable to look back at the entire thing. Plus, it's not like he cares about my friendship anyway (he's a stranger to me again). When is it OK to delete someone? Am I being too childish?
Maybe you are. Get over it and be happy and proud about that you got over it. This can strengthen you up, if something like this happens again and you'll be good much faster