Hey, I am quite determined to encourage my girlfriend to open our relationship and I wonder where to begin.

We are together for 4 years and she moved into my apartment a year ago. It's been great so far - we trust each other, spend a lot of time developing our emotional bond and technically never fight, apart from some minor and silly setbacks.

At the same time our sex life began to slowly fade away. We are stressed out by work and lack some kind of motivation/ignition to jump into bed and eat each other out. We often say that "yeah, today is the day!", but then she just prefers to cuddle, watch a movie or play some game together. Most of the times it's me who initiates, but without much success. My libido is still pretty high and I am often left dissatisfied, which she knows. It breaks my heart a little, especially we have met each other on an erotic dating site and the first year of our relationship was fire.

I am expecting to hear that now's the time to have an honest discussion with each other, set our priorities straight - after all we might be simply incompatible. And I totally agree with you. But...

I started fantasizing. The idea of opening our relationship could solve our problems. If it's the daily dullness that's the reason behind it all, then sharing ourselves with others could open our eyes to possibilities of what we could do. Moreover, we often joke about having a threesome, either with a male or female, as who to choose first so we don't get to be jealous for too long. She states that I am enough, but currently she doesn't seem to want me. We both have people and friends in our lives we could engage with, so I believe we would avoid being "unfair" in such scenario. Do you believe my intentions are valid and this could somehow work out? If so, what do you think would be the best way to persuade her to the idea?