Meeting the family

Am I wrong to be upset about my boyfriend not wanting to meet my family? We have been together for 3 years and I thought finally tonight he would come to Christmas <a href="https://play.google.com/store/apps/details?id=com.glow.android.eve">Eve</a> dinner, but he just told me no. So I have to leave by myself, travel almost an hour, have dinner and gifts with my family, then come back and exchange gifts with each other. I go to every one of his family events, we know each other very well by now, I've even gone out with his mom and sisters without him. I'm practically part of the family. He had met my mom once very quickly years ago when we first started dating. I kept asking him please babe, it's just dinner while hugging him but he said no get off me and I felt like crying (and did pretty bad once he left the room). He said of course get upset cause you don't get what you want and stormed out of the room slamming the door.honestly am I over reacting? I really want to still have a nice Christmas but I feel like shit when he wont just simply have dinner with my family. They're such nice people too, I don't know what he's so afraid of. It's really hurting me and putting a downer on my night. I've done so much for this guy...
Update: thanks for the responses. His reasoning is social anxiety, and he said he wouldn't care at all if I never met his family cause that's not important to him. I had social anxiety BAD for many years, but I still went to plenty of family gatherings I did not necessarily want to attend.