Why can't he just leave us alone?

After about 6 months of not speaking to dh- he has has been making efforts to contact him. A couple of weeks ago he made a status on facebook about how he was thinking about "someone special" and that he hoped he was. Having a good life with his family. And then of course people asked who and he named dh specifically. Dh ignored all this. Just a few days later he leaves a message for dh- about whether he was just done with ss. Not a friendly message that you leave for someone special. Dh ignored it. Two weeks later, on Saturday he gets another message about fil missing the "babies" and wants to see them. It actually took me a minute to figure out that the babies are my children who are 11, 13, and 15.

Now, this man has quite easily gone months and months, perhaps even more than a year without seeing or speaking to these "babies". He has never attended any of their events. He ignores their bdays and Xmas. My dd15 worked in the same place as him in the month of October. She walked by him probably 100 times. He never waved at her, smiled at her, or acknowledged her in anyway.

My "babies" have no interest in seeing this man- they are all old enough to have long ago noticed the Inlaws indifference. My dh did mention to them that fil called and said he wanted to see them. My dd15 had a nightmare that night that the Inlaws came over and killed us all. My dh also had a nightmare that night about fil.

So should dh once again just ignore? Unfortunately this doesn't seem to be giving fil the idea. I'm really tempted to say something myself since he is trying to bring my"babies" into it.