Hearts2Hearts

In the Korean comments

One commenter frames the pairing as a callback to the previous year’s Idol Star Athletics Championships, writing, in translation, “The first runner and the final runner from last year, running together—so cute.” That gives the two-person run a specific earlier connection to watch for.

What the words mean

낭만이 미쳤어 (nangmani michyeosseo, literally “the romance is crazy”) does not describe a romance here. The commenter is saying the running moment has an extraordinarily evocative, almost cinematic quality; 미쳤어 (michyeosseo, “is crazy”) is a casual, exaggerated intensifier.