Trust me when I say that there are lows and highs. There comes a certain amount of complacency and comfort in a relationship. If this is what you're getting in what should be the height of your romance, you're best off thinking about it further before progressing. As people get older, shit happens. It sucks. It makes you think about just leaving. If you can't remember the passion and the love that made you say "I do" in the first place then it would make walking out super easy. My husband and I have been together since I was 19. It burned hot for the first 10 years or so. Kids and health issues and general "grown up shit" have definitely caused some issues. If I couldn't vividly remember how I felt in those days, didn't see a glimpse here and there... I dunno.