Couples that adapt to each other stay together. You can't be the same person you were when you first met, but as long as you grow together and not apart, it doesn't matter.
As we age, we establish new friends, interests, habits and ideas, and as long as at least some of those changes are aligned with your spouse, that's a good thing. Ensure that you're both headed down the same road. If your partner wants to change careers, support him. If she goes through hard times, be her shoulder to cry on.
Growing together is much easier when you're around each other enough to notice changes. When couple time diminishes that's when relationships fork and you both head in different directions.
Learn how to deal with annoying habits on the next page.