Often, we tend to place too much emphasis on what other people think when it comes to happiness in our relationships. Too often we let the imaginary rules of society determine what we're supposed to be doing with our lives.
Friends and family, although they mean well, like to place their own moral judgement of what is right and wrong in other people's relationships. (Notice how those same people can never see what's wrong in their own relationship.) Some of these same friends and family members are divorced, or have one failed relationship after another. Why would you ever take advice from any of these people on how to have a successful relationship?
One buddy of mine loves to give romantic advice, yet he's going through his second divorce. Another friend of ours can't stay in a relationship for more than 6 months at a time. Would you take financial advice from someone who lives paycheck to paycheck? Then why would you take relationship advice from people who aren't in a successful relationship?
What works for one couple's relationship doesn't necessarily work for others. Truth is, there are no concrete rules for what determines a happy relationship. Decide what makes YOU and your PARTNER happy, and then do it. As long as what you're doing isn't causing harm to anyone else...Go FOR IT!
Make up your own boundaries and guidelines for what works, and don't let society decide for you.