Is a relationship doomed when one person is a bit more invested than the other? Not necessarily.  In fact, it's quite typical for one partner to care a little more than their significant other -- and the roles can switch over the course of the relationship. This can happen because of a myriad of factors, including: One person having a more stressful job Illness One partner being more organized and on top of things (e.g., relationship milestones, finances, etc.) In essence, it doesn't mean that the person who's a little less committed doesn't value the relationship. But everything from a person's disposition/personality to life simply getting in the way has to be factored in. And sometimes it may seem like they don't care as much because that's how the partner perceives it, but it's not the case at all. For example, some people are naturally more mushy than others. Just because they're not always keen on displaying affec...