I agree, casual dating is fine. I mean you should definitely be honest with people about what's going on. It reminds me of my friend who was dating several people and didn't tell the girls. He was out on a date with another girl and the girl's friend saw them together and told the girl. She didn't say anything, eventually he fessed up and she gave him a piece of her mind. But in the end, she forgave him, because he did eventually tell her and they've been married a few years now.