Jaehyun is not only a hopeless romantic with his beloved, but also goes to extremes when it comes to his friends. All his friends feel at peace in his presence and there's no denying that he makes them feel loved and appreciated. He remembers the little things about his friends and surprises them. Even holding the door open for his male friends is not a question. In fact, he always has their back and tries to keep a cool head for everyone. Almost everyone would call Jaehyun not only a perfect son-in-law but also a perfect mate. He recognizes the slightest change in emotion or when someone is carrying a burden. In such moments, he showers them with affection and offers them  to talk with him. However, he knows his limits and accepts it when someone wants to be alone. A warm-hearted person, but definitely not sensitive. As a captain and a big brother figure, he has a good perspective on his friends. He tries to put a smile on everyone's face and make sure they know he's always there. While all the Deities are his close friends, he's often hanging out with hyesoo, rosé, yeonjun and seoyul. He has found comfort in hyesoo the most because they complement each other. She makes him feel like a free fall without always being the perfect romantic guy. Jaehyun tries to be a good friend to them. He goes to all the performances rosé has and helps her when she practices. Afterwards, he takes her shopping and holds all her bags. Jaehyun drives with Yeonjun around the city in the middle of the night after saving him from his stupid ideas. He's not as close to Seoyul as he is to the others, but he loves looking at Seoyul's sculptures and feels like a proud brother. and among them all, Hyesoo is his soulmate. That is where he feels most comfortable. Jaehyun enjoys talking with her and being around Hyesoo, even if she is always late and he is waiting with a coffee in his hand.