WR, I'm going to be honest and just say that no one knows why the MLCers do the things that they do on any given day. But, his sudden interest in the boys could possibly be because of legal issues and maybe he's lonely and actually wants to stay in touch w/them. I don't see where Valentine's Day would have anything to do w/him wanting to be w/them.
Now, if his nutty buddy behavior was towards you, that could very well be a different story.
I would suggest that you not think too long or hard about why he's doing this sudden "Disney dad" routine...but I do home he'll work your S14 on his project.
If you sit quietly, some of the answers just might fall into your lap.
Sit quietly, the answers will reveal themselves when you least expect them to. The past is gone, the present is a gift and you need to focus on today, allow the future to reveal itself when it is ready.