Is Squidward in love with Sandy?

Well, considering that Squidward is so self-centered, probably not. It is most likely that Squidward is not in love with Sandy because he thinks that he is the best and all of that. And, he usually hates all of SpongeBob's friends. And, it is said from many resources, that there will be an upcoming episode that Sandy and SpongeBob admit that they both like each other. So, I don't think that Squidward will be getting into SpongeBob and Sandy's upcoming relationship.