1. If you’ve been with someone for four years, you’re probably much more comfortable with them than when you first started dating.
2. By now, you know their food likes and dislikes down to the very last detail.
3. You’ve been around long enough that your partner’s family probably doesn’t mind fighting around you.
4. You’ve become totally comfortable with your partner knowing the real you.
5. After four long years, you’ve probably made it through some bad haircuts.
6. You have likely lost all self-consciousness about farting.
7. You are very, VERY good at speaking in code – or without words at all.
8. Special dates are less intense and stressful than they once were.
9. And the ways you try and impress them are way less over the top.
10. It’s nice to be with someone who knows you well enough that you can be weird together.
Full article and list at Buzzfeed.