Are you happy with your romantic relationship? It turns out there are a few other important factors that may influence how you feel about your relationship: how old you are and how long you’ve been together. In fact, in a new paper, researchers mapped out the relationship satisfaction of more than 165,000 people around the world—and they saw distinct up-and-down patterns as couples moved through life.On Valentine’s Day, around anniversaries, and in the dark lull before sleep, maybe you’ve pondered this question. You might have thought about how you met your partner, what you’ve been through, and how they’ve changed—or just how they got on your nerves that day. The results may offer conflicting clues about the patterns in your own relationships. According to this study, both age and the length of the relationship matter to how satisfied we are—although age seems to matter more. In other words, you might indeed …