Dating

Here’s a dating question that came up in talking to my roommates tonight. I don’t reckon it’ll ever matter, but I’m curious about people’s opinions.

What are the rules and mores regarding dating multiple people simultaneously? I figured there was an initial period where you’re just dating and then at some point you either get a sense or explicitly discuss your exclusivity. One of my roommates think that there is a lot of variety on the issue and that I’m obligated to discuss the issue with a girl. To me that just seems way too serious for people that are just getting to know each other.

What do y’all think?