Rude in laws ??

Okay so to make the story short my husbands parents are jealous of my parents. They made many statements to my husband that he spends to much time with my family and none with his own. Well everytime he invites them to things they always have an excuse of why they can't make it. Well at my wedding his mom was decent to me but she got in my my moms face a yelled at her. My parents have done nothing wrong and want to be civil with them at least so we can have dinner at our new house on the future but his parents want us to only have them in their lives and his mom won't stop sending me messages on Facebook everyday asking me how I'm doing and that she loves me. I don't know how to handle it I don't even want to talk to his parents because of how they treat mine. What should I do?