the social network

Guy found out I was getting divorced, he started finding excuses for us and our kids to hang out at our pool. Guy starts talking about ending it with his girlfriend, texting me constantly, inviting me to workout with him. Somehow things come up so we just see each other with kids around, thought he still shows interest in us hanging out alone together and stops talking about girlfriend. Winter weather comes, guy is not coming over with kids. Excuses. I check his girlfriend's facebook. Guy proposed to her and put many offers to buy a house together; then left her a few months later for an old flame. Guy and kids spent Christmas with old flame and kids. Guy is now married to old flame, she has no idea how much of a woman-user he is and is boasting about their blended family and twin flame on fb. All of this is on his ex-girlfriend's facebook, she did me a huge favor without even knowing it. He texts me after months of not showing his face, never mentioning all of his life events and basically benching me for later use, to ask me to start picking up his kids from school because he is starting a new job and has a new custody schedule. I said 'No', blamed Covid, which I take very seriously and don't want to risk it, but also because he is an idiot gold-digger that just wants me as a babysitter and to use our pool. I will not let him know that I know all of doings. Let's see what other favors he thinks I'm more than willing to do for him... poor kids!