I definitely read that last bit as tongue in cheek. Also doesn't "No, it would take too long" imply that their partner has used it in the past? Maybe the process really does take too long, because you have to scroll through a 100 movies before you find one you both like. And in that case it sounds like the partner was decided what they wanted to watch - Space Jam. In that case I'd just go "ok, sure, if you really want to watch movie X then let's watch it". Obviously we're just sitting here digesting someone's life on the internet. It's stupid anyway.