My husband and I have been in a relationship for 20 years already. Some people or couples we know ask us about the secrets of being together and how to keep this long-term relationship successful. So, I decided to write some tips on maintaining our long-term relationship. The truth is, after two decades of being together, our feelings in our relationship change over time. The sparks and the rush of falling in love are not permanent. When you are with someone for a long time, you feel comfortable with each other. Sometimes we think that our love for each other fades. But no, it simply evolves. The idea that the…