Hector's jealous, and his friend is scared of him.
Suzan is flirting with the friend and moves away when Hector comes in to the room.
I think she wants him, if she hasn't already fucked him. Hector and her have had some big arguments because of his suspicions already.
The guest and Suzan would make a better couple, they are so cute together, and Hector just seems evil. IMO.