Squidward and Sandy usually do not talk to each other. However, Squidward doesn't seem to mind Sandy and in most episodes they get along very well. Sandy seems to be more interested in Squidward as the series goes on. Most people have seen a ship in Squidward and sandy as is becoming a more popular ship, other then Spongebob and Sandy (Spandy) .This pairing is referred by some fans as "Squindy".
The opinion on each other
Squidward thinks Sandy is the only normal person in his environment. As seen in episode "Squidtastic Voyage" Sandy actually cares about him, and is probably the most worried person about his problem (Squidward has swallowed his clarinet). If there is really anything between them, it would seem that it is Sandy who is more interested in Squidward than vice versa. Sandy is the only person Squidward has no problems with.
Episodes when they are talking with each other/caring for each other
- At Krusty Krab Halloween party Sandy greets Squidward, and he is asking her what she's supposed to be. She answers, but he says "I don't get it". Sandy walks away offended, but Squidward does not seem to care. It may imply that Sandy wanted Squidward to talk to her, or it could of been a hint of attraction.
- Sandy was at Squidward "Funeral" with loads of other "mourners"
- Squidward says to Sandy "He's not in my thoughts" and then replies "Well, think again"
- Squidward jokes with others about Sandy pride, that she is a land creature, and these are better than sea ones. He does however seem to apologise, when Sandy rescues them from a seagull
Season 4 is a season where their friendship develops from very occasional talking to something more. Sandy and Squidward both seem to care more about each other
- Sandy seems to care most about Squidward in this episode, also she's a bit hitting on him (although, these are maybe just a friendly gestures), they are laughing with each other and Sandy tries to gently calm him down
- In this episode, Squidward begs Sandy to separate SpongeBob and himself.
- Sandy is seen visting Squidward at the hospital with Spongebob, Patrick, Mr Krabs and Patrick when he broke his laugh box.
- Sandy calls Squidward "Squid Cakes" and pokes his nose.
- Sandy talks to Squidward in the Krusty Krab, in Spongebob house about his clarinet about him playing it and applauds Squidward for getting rid of the Earworm by saying "You did it!" and touches his back
- Sandy and Squidward talk to each other in the krusty krab, She also says to let her friends go to a ghost as talking about Squidward, Mr Krabs and Patrick.
- Sandy tries to help teach Squidward karate.
- Sandy was seen carrying Squidward away from the bicycles as he couldn't escape
- Squidward perches on top on Sandy's head
- Squidward was seen riding on Sandy