But judging a relationship can be tricky, and couples often wonder whether things are quite as they should be.
Kate White, the editor-in-chief of Cosmopolitan magazine, visited The Early Show with six basic questions that can help you diagnose any problems in your relationship. She says it's a good idea to ask yourself these questions every six months or so as a way to reevaluate your love life.
Can you be honest?
White says that in order to have a healthy relationship as a couple, you have to be able to offer criticism and advice to each other. If you are censoring yourself, the relationship won't progress — and neither will either of you.
Remember that honesty hurts. Try to deliver your message in a way that isn't critical. When you're on the receiving end, listen carefully to what your partner is saying about you, without getting defensive.
Do you still do your own thing?
People in relationships often start doing everything as a couple, and eventually become nervous about doing things on their own. But it's important to have separate experiences so that you can grow individually and have something to talk about.
Are you "authentic" with each other?
When you're first forming a partnership you don't usually show everything about yourself. But the more serious it gets, the more you need to reveal some of your baggage to see if your partner is going to love you as you are.
Do you still laugh?
White stresses that humor is important. You should be able to laugh a lot in relationships. It shows that your partner really "gets" you and knows what ignites your sense of humor.
Can you rebound from a sex rut?
Sometimes the sexual part of a relationship derails during times of stress. These phases are typical in a sexual relationship, but you should be able to resume something exciting. That's a sign that the relationship is working.
Do you bring out the very best in each other?
Your partner should make you feel good about yourself and support your success, and visa versa. White says it can be painful to observe a relationship in which a partner is jealous of a spouse's success.