what would you do?

So on Facebook a few month ago I had over a thousand friends, I decided that was stupid and I didn't need that. So I went and deleted everyone I didn't know or didn't care to know about and kept those I do know. Now my boyfriend said he'd do the same. He never did. He said he'd just stop adding people he didn't know, for a while that worked. But recently he's starting to only add girls he doesn't know, they are all beautiful girls with their boobs out and almost naked most of the time. His only mutuals with them are people I know that my boyfriend doesn't know. They don't attend the same school or anything. Now I'm really mad about this even though it seems silly because he said he'd stop and I went and deleted a bunch of guys mostly that I know only added me to chat me up. No point having them on my fb if I have no want or need to speak to them.