What he calls the farmer: "farmer" only, doesn't use first names at this stage. (You're not even worth the effort of him remembering your name. You'll be gone soon anyways)
Flirting?: ABSOLUTELY not. Gross. They're all stinky from the farm actually and they're not even THAT good looking
Attitude: Would rather not have to talk to the farmer, actually. If he has to, he's gonna be hostile about it cause how dare you be wasting my time rn?
Stage 2: ≥2 Hearts, <4 Hearts
What he calls the farmer: "Sunshine" once in a while, but in a condescending way. Like you're a little dumb and way too positive go away. Mostly though he calls you nothing, a real "hey you!" sort of vibe. Still no first names at this point—we're not close like that.
Flirting?: Yeah, no. You WISH.
Attitude: Giving you more of his attention/not actively ignoring you. He's still hostile mostly, but sometimes one (1) joke slips out. Kinda flips between hostile and snarky depending on the day he's having.
Stage 3: ≥4 Hearts, <6 Hearts
What he calls the farmer: still "Sunshine", and he calls you by your name now sometimes.
Flirting?: ....Maybe one in a while but ITS A JOKE OH MY GODDDDD like its not even that serious bro
Attitude: Actually why are you kinda good? He realizes that you have an ounce of potential, and he sees an opportunity to get a full on rival that can give him motivation to be better. This is peak Rory and Paris core.
Stage 4: ≥6 Hearts, <8 Hearts
What he calls the farmer: First name mostly, Sunshine/Sweetheart to ragebait you (it works).
Flirting?: Yeah and this now its NAWT a joke, i knwo you came to the beach just to see my naked portrait you PERVERT
Attitude: Okay this person is kinda fun OKAY I admit it I kinda see what everyone else saw when they moved in so sue me. Sometimes, if you are lucky I will sprinkle in some backstory and vulnerability as a treat. But mostly at this point its a lot of innuendos.
This is where it gets branched out - ofc there will be some default lines that are generically "March is close to the farmer", but also a lot of lines that's either best friend shit or romance stuff.
The romance stuff def gonna be a lil more freaky, but in either case its still a fun rivalry cause they both like having someone else that challenged them ^^