There is a unique culture between Korean couples where they share the same items. It can be clothing, accessories, or even pairs of shoes. Those items are like a sign that they are together.
Fans caught some dangerously similar items from SeulGi of Red Velvet and JiMin of BTS. It may be a coincidence, since their fans may have given the same gift since the item was popular or, they may just have bought the same thing!
However, the suspicion cannot be loosen. Celeb couples try to hide their relationships as much as possible and put on the littlest thing that shows but gets themselves satisfied.
Though we have to hold our judgments until anything's official, they would surely make a cute couple!