It's like he is fishing out the best girl by laying the bait. He wanted to decide by seeing which fish takes his bait in the end. Wow. Instead of letting them come to you, even when she has thoughts about Jung, she chose him and is willing to stick for real. Kang should've made her fall head over heels for him if he indeed really like our Suk Hee, no matter the outcome. That was just an excuse. They could have worked it out if he invested more in his sincerity since ut's still possible to make Suk Hee forget Jung.