Of course, sexual affairs are red flags for infidelity, but there are common elements that make any outside relationship an infidelity. Sex therapist Tammy Nelson explains what they are and how to spot them.

By Chris Lyford - A therapist works from his home office, which means clients sometimes observe elements of his personal life. He's had clients ask about his electric car in the driveway, his dog, and where his kids go to school. He's gently asked these clients if they can stay on topic, but worries about seeming callous. Here are five creative examples of how other therapists have dealt with this.

By Sherry Turkle - Digital connection is a way to keep my job simple and my life tidier. But we have to support each other in remembering that the kind of conversations that may seem old-fashioned are actually most necessary and essential. Right now, digital culture closes down the questions that talk therapy knows how to open up.

By Dea Silbertrust - After surgery, my therapist's willingness to trade the comfort and security of her office for my apartment would be considered a boundary crossing by some. But in accommodating me, she demonstrated the difference between a boundary crossing and a boundary violation, and, more important, what it means to offer a simple act of grace to another human being.

By Daniela Gitlin - When you practice in a rural town, sometimes it can feel like everyone is connected to each other. Instead of worrying about boundary and confidentiality violations, I've learned a strategy that embraces the dilemma instead of avoiding it.

By Chris Lyford - Mark and his wife, Nicole, have been in couples therapy for almost six months. But Mark recently requested an individual session, where he revealed he recently shared a kiss with an old girlfriend and has plans to rekindle their friendship. He's asked his therapist to keep the whole thing a secret. Here's how five clinicians say they'd tackle the situation.

It's not always easy to get men to talk about intimacy and sex. But according to renowned sex therapist and author Esther Perel, there's a way to weave questions and observations about sexuality throughout your dialogue with reticent male clients that expands their understanding of its significance in all aspects of life.

By Chris Lyford - Asha recently gave her therapist a homemade necklace, which he accepted, thinking it innocuous enough. Now, she brings it up almost every session, asking why he's not wearing it and if he still likes it. Asha has a history of attachment issues, and her therapist worries his response might offend her or cause her to quit therapy. Here's how five therapists say they'd respond.

By Ron Taffel - At 15, Jenny regularly breaks her curfew, flirts with drugs, and is getting close to being suspended from her Manhattan public school. Today, she and her parents are in my office discussing the latest issue: New Year’s Eve is coming up, and Jenny and her posse have plans.

By Chris Lyford - While therapeutic skill is the product of years of practice and self-determination, most clinicians need a mentor: someone who takes them under their wing and inspires them to be a better therapist. The five clinicians whose stories you’re about to read all agree on one thing: seeing how their mentors practice left an indelible mark on their personal and professional development that still resonates today.