Adds joy messages to Aphrodite (#20740)

Seeing as the drug has enough of an effect on people to cause factory
farming of diona and spawn a whole faction of diona birthed from such a
practice, it's probably safe to say it has some kind of pleasurable
effect when consumed.

This makes that a little more clear.

code/modules/reagents/Chemistry-Reagents/Chemistry-Reagents-Medicine.dm

@@ -384,6 +384,9 @@
 	taste_description = "euphoric acid"
 
 /singleton/reagent/mortaphenyl/aphrodite/affect_blood(var/mob/living/carbon/M, var/alien, var/removed, var/datum/reagents/holder)
+	var/list/joy_messages = list("You feel soothed and at ease.", "You feel content and at peace.", "You feel a pleasant emptiness.", "You feel like sharing the wonderful memories and feelings you're experiencing.", "All your anxieties fade away.", "You feel like you're floating off the ground.", "You don't want this feeling to end.")
+	M.notify_message(SPAN_GOOD(pick(joy_messages)), rand(20 SECONDS, 40 SECONDS), key = "aphrodite_affect_blood")
+
 	M.add_chemical_effect(CE_PAINKILLER, 40)
 	if(!M.chem_effects[CE_CLEARSIGHT])
 		M.eye_blurry = max(M.eye_blurry, 3)