Yup. I have friends at work. We don't really hang out after work or anything. Some of us do regularly text each other outside of work. Mostly jokes and memes, though sometimes other topics.

While I don't look at my job as a social outlet or meet up place, I do think it's good to be sociable and friendly at work. Of course there are a few snake-in-the-grass types at work that I maintain distance from. Professional detachment type of thing.