A couple of weekends ago, I went out to a bar with one of my girlfriends who was visiting from out of town. (Let's call her Linda.) We met up with a group of friends and Linda started chatting and flirting with a guy who was part of our extended group. They hit it off, so Linda gave him her number because he said he would be visiting her city the next weekend.Later in the evening, Linda was introduced to the guy's girlfriend! Feeling embarrassed, she convinced herself that he was just being friendly. By the next day she had totally forgotten about it . . . until he ended up sending her a suggestive text message when he came into town. This guy was a real keeper: trying to make plans via text when he already had a girlfriend! How does one handle such douchiness?