A romantic relationship between two people is unlike any other in life. You can have multiple friends and colleagues, but you can (or should) only have one "significant other." This is why they have such a vague but powerful title.
Though comparing yourself to other couples is a recipe for disaster, it's important to understand the characteristics of a healthy relationship.
We all get rose-colored glasses when we fall in love (no idea who ships these things, but everyone gets them) so here are some aspects of healthy relationships so you can anchor your perceptions in reality.