I've been reading about friends that are having anniversaries after years of marriage and I've seen pictures this very day of friends out enjoying each others company after years of marriage. My heart was warmed when I read of their happiness.
Years of being together brings something you cannot get from any other place---familiarity--which is NOT a bad thing. Knowing what the other is thinking---knowing what they like---knowing before they say it what is about to come out of their mouth---knowing their likes and dislikes---that is all good. And then the comfort of having lived life with another for a long time and walked the same road together----Good-Bad--and just Life---but always with someone to share that journey with you.
At the end of the day----it is a blessing to have someone by your side to speak of all that there has been ---and they know and understand what you speak of. It's not always easy to live with another---but it's very difficult to be alone. So enjoy the blessing while you are together ---it is a gift from God -Himself. "It is not good for man to be alone".