Shipper on Deck: Johnathan is very interested in getting Scotty and Diane together.
Shipping Torpedo: Mark initially isn't so keen on his cousin Diane marrying Scotty, since he is worried about what kind of life she could have with a handicapped man (Scotty is quadriplegic ). He eventually gets over it once he sees how much they truly love and need each other.
Tragically Disabled Love Interest: From Mark's POV. He is concerned about what his cousin Diane's life will be when she gets together with Scotty.