• Don't overreact. You may be offended by someone's "borderline inappropriate" messages online to you, but that provocative attitude "is part of the person's m.o." she says. "Even if it rubs you the wrong way, this is who they are. They just don't have much finesse."
She says if the messages make you feel very uncomfortable, then you may want to change your privacy settings so you don't see messages from this person.
"And then I would only respond to emails every once in a while," she says. "Or tell them that you're being inundated with emails so you're not going to be responding much. You can find ways to be subtle."
• Use technology. "Technology is actually on our side," she says. "It gives us ways to protect our personal information, so use it. You don't have to reveal everything."
• Be honest. Don't fool yourself into thinking you only see your contact in a professional way when you're looking forward to checking your Facebook page for messages from this person, or you're hiding this person's emails from your partner, she says.
"Ask yourself: Is this just a friendship or am I kidding myself?" she says. It may be time to curtail the relationship if it's becoming too important.