So I met this girl the other week. We've hung out a handful of times and hooked up a few times. I know that she is really into me and wants to date exclusively. However I am recently single and want to hang with other people. I have a date with someone else planned this week. How do I break the news to her? I don't want to lie but I know it will break her heart if she knows I went out with another girl. How in the hell do you guys handle dating more than one girl at once?