The first time Adele went out to the bar and kissed the guy it was because Emma left a message she'll be late and Adele shouldn't wait for her. After that Emma seems kinda distant and less interested in Adele. Conveniently she does end up with Lise later. Do you think the audience was only meant to suspect(falsely) that something was going on there or did Emma cheat on Adele too?
I am pretty sure Emma was cheating. She had a girlfriend and cheated on her with Adele. If you pay attention, her body language is the same whe she's flirting with Adele and then with Lise. Also, I believe that's the point of the sex scenes, so the viewer understands how lustful and passionate they are for each other in the beggining of their relationship; a few years later, Emma isn't sexually interested in Adele anymore.
Yes, but here's the thing: many people are in terrible relationships and still find difficult to break up. Maybe Emma wasn't cheating, but she wasn't interested in Adele anymore (and probably flirting HARD with Lise just like she did with Adele before).
its kinda ambiguous.. leave some details for viewers to decide. I think emma cheated too and the movie is basically tell us there's no such thing as everlasting love.