Your ex would like to add u as a friend!

So one of the guys I was dating during the summer recently asked to be my Facebook friend. This normally wouldn't be an odd request but when we were dating he specifically said he had an account but rarely went on it, so I left it at that. Also, we struggled in the progression of the relationship because after three months he still wouldn't introduce me to his children stating he doesn't want women coming in and out of their life. I totally respected that. The problem? After responding to his friend request, what is splattered all over his page? His Devotion and love for his current girlfriend. They even have the "in a relationship with" link. So of course the teenage, immature girl in me had to read their posts to one another. That was mistake number one. I find out they met in October and "haven't spent a day apart since." are u kidding me? What happened to not exposing the kids too soon. I'm sure he did this on purpose right? Why add me as a friend now when your in such a fabulous relationship?