Should I let my ex bf keep some of my stuff and ignore my request?

I broke up with my ex boyfriend the end of last year. When I first told him i needed a break, he packed up some of the things (which I didn't know about) I left at his place and dropped it off outside my garage at my home. However, once I knew we were done for good (after we met the last time at his request), I sent him a note and asked nicely for only certain things returned (including gifts I gave to my late husband that my ex bf wanted to use like a really nice grilling set). I also brought furniture from my home and bought some things for the apt (since original intent was for me to stay at the apt for long term weekends) to make the place more comfortable when I was staying there since I still have my home and was planning on selling my home if things worked out with him.

I asked for very little and thought my request was more than reasonable including allowing him to keep all of the furniture which includes the dining set and the bed and headboard he sleeps in. Since I was going out of state for a few months I requested he contact my son and my son would pick it up when convenient. I didn't hear back from him, ever. and the thought of asking him again turned my stomach.

So at this point, I believe he moved but don't know where to. Do I let him have the last laugh?