Is casual sex actually possible?

[Mak W]

I met this guy at my friend's a few weeks ago and we ended up making out randomly. I thought it would just be chill and that we wouldn't even see eachother after but he talked to me and now we are having sex like every night but we aren't emotionally attached still. I hear about how regular sex with someone can make feelings. Is this true or is it possible this will stay how it us. If it makes a difference were both stoners and don't care as much as normal people but we are both under 18...