Two topics have emerged here.
Facebook: the interaction between my wife and I, on Facebook, is limited to "look at the cute photo of - insert type of animal here " Neither of us posts anything about the other on Facebook. Nothing work related or relationship related - I don't even wish her happy birthday on Facebook.
In fact if I can get the person on the phone or facetime/skype I'll wish them happy birthday by voice instead of posting "fake wishes" on Facebook. It's too easy, like the hashtags after terror attacks - they achieve nothing but make the person hashtagging "feel" better about it. Try it, you'll see the people really appreciate it and will remember it more than a "happy birthday old log" on Facebook.
Sexuality: 24 years married, together 26, normal work week it's about 2-3 times/week solid on average. On vacations it's daily, sometimes twice - once in the morning and again at night, we're both morning persons. Not sure why, just seems we enjoy it more in the morning before getting up although I don't usually turn down evening baise. I have a habit that after three days in a row of baise I start calling it a "turkey" which is a bowling reference for three strikes in a row.
Having said that we are each other's best friend.
With "age" as we're both in our mid fourties, we've found that the things preventing us from having sex are more "health" than "desire" related. There are more occasions when either one of us is under the weather and has to forfeit. Also we barely drink anymore. Alcohol is a factor in evening sex at our age. More than two glasses of wine and it's ZZZZs rather than OOOh AAAhs...
Tips for long lasting sexuality with your spouse? Never make them feel bad, never make them feel inadequate, constantly compliment them on their appearance, smell and so on. Start early, like if you're planning evening sex foreplay doesn't have to start in bed. Footsie at the table will translate into sex later in the evening.
Whatever you do don't forget to cuddle. Releases good hormones and keeps your relationship in sync.
Now go have consensual sex with your spouse.