Complete the indicated task to unlock the achievement.

Achievement	How to unlock
Acquaintances	Purple Hearth Achieved.
Can Be Married	Red Hearth Achieved.
Close Friends	Green Hearth Achieved.
Closer Than Ever	Orange Heart Achieved.
Friends	Blue Heart Achieved.
In A Relationship	Yellow Hearth Achieved.
Special	Pink Hearth Achieved.
Strangers	Black Heart Achieved.