Relationship Help

Hi guys, my boyfriend and I have been dating for a little more than a year now and up until recently (like a month-ish ago) things have been feeling like they're going downhill. I'm not having fun anymore and I don't know how to tell him that. I want to go out and do things but he would rather stay in. I don't want to force him to go out with me but I also don't want to just hang out with him at home. How do I tell him he's boring without saying "you're boring"?

Also his temper has been getting worse. He snaps at me a lot and in turn it's making me crabby too. How do I end this cycle?

Thanks in advance for the advice, ladies!