He has two cell phones. If you notice that a guy you’re dating has two or more different cell phones, it should raise a red flag. "When I was dating, I had two cell phones," said DDHG contributor The Average Guy. "One for the women I wanted to date and one for my girlfriend." He uses multiple e-mail addresses. If your guy has a bevy of e-mail addresses for different purposes, beware. "Sometimes guys use different e-mails for different girls," said Average Guy.

"They want to keep the women separate and using different e-mails is one way to do it." 3. He’s got a profile on a dating site. If you’ve been dating a guy for 3 to 6 months and he’s still got a profile on a singles dating site, beware. "Guys like to leave the profiles up on site like Loveawake.com and E-Harmony.com just in case things don’t work out with the girl they’re dating."

He’s elusive about where he lives. If the guy you’re dating hasn’t invited you over to his house within a month of dating, he could be hiding something. "Guys who are juggling multiple women don’t want all of them to know where they live," said Average Guy.

He never answers his phone when you call. If the guy you’re dating never answers his phone when you call and instead has to call you back hours later, this is a huge red flag. "Most of the time if a guy doesn’t pick up when he sees a girl he’s dating calling, it’s because he’s with another woman," said Average Guy. "He could be with his girlfriend or wife and, obviously, he can’t talk in front of them."