[MIRROR] Add back hearts for valentines, but in a sane manner (#3401)

* Add back hearts for valentines, but in a sane manner (#56900)

Adds back hearts removed by #56897, but in a way that doesn't completely murder timers.

Also made the code a bit better.

Here you can see it on my hideous date.

https://user-images.githubusercontent.com/35135081/107848333-6ec06280-6da7-11eb-91b6-1382380eb3b4.mp4

* Add back hearts for valentines, but in a sane manner

Co-authored-by: Mothblocks <35135081+Mothblocks@users.noreply.github.com>

code/datums/status_effects/neutral.dm

@@ -49,13 +49,23 @@
 	duration = -1
 	status_type = STATUS_EFFECT_UNIQUE
 	alert_type = /atom/movable/screen/alert/status_effect/in_love
-	var/mob/living/date
+	var/hearts
 
-/datum/status_effect/in_love/on_creation(mob/living/new_owner, mob/living/love_interest)
+/datum/status_effect/in_love/on_creation(mob/living/new_owner, mob/living/date)
 	. = ..()
-	if(.)
-		date = love_interest
-		linked_alert.desc = "You're in love with [date.real_name]! How lovely."
+	if(!.)
+		return
+
+	linked_alert.desc = "You're in love with [date.real_name]! How lovely."
+	hearts = WEAKREF(date.add_alt_appearance(
+		/datum/atom_hud/alternate_appearance/basic/one_person,
+		"in_love",
+		image(icon = 'icons/effects/effects.dmi', icon_state = "love_hearts", loc = date),
+		new_owner,
+	))
+
+/datum/status_effect/in_love/on_remove()
+	QDEL_NULL(hearts)
 
 /datum/status_effect/throat_soothed
 	id = "throat_soothed"