I like the idea here but the overall scene seems a little awkward to me. It's almost as if you're expecting to be seeing them watching a movie at an outdoor cinema, yet they are looking in the wrong direction vs light for that. I think it might be worth experimenting with a closer crop and b&w processing (you'd get a great range of tones I think)
I like the contrast between the green grass and the bright red covered couch. It's a good abstract concept. The problem lies with the models' attire. It doesn't work itself into the concept well. I think I would have went with an earth tone color cover or dressed the models abstractly.