《只是相爱的关系》讲述了一群面对惊涛骇浪依然坚持隐忍,虽然看起来微不足道却更显伟大的人们的温暖爱情故事。Lee Gang-Doo (Lee Joon-Ho) dreamed of becoming a soccer player, but an accident ended those dreams. His father died in the accident and he broke his leg. Lee Gang-Doo spent 3 years in rehab. Now, he doesn't have anything and just wastes his days. Lee Gang-Doo then meets Ha Moon-Soo (Won Jin-A). Ha Moon-Soo makes architecture models. Ha Moon-Soo also endured through the same accident that killed her younger sibling. She has suffered from guilt that she survived. She has lived her life earnestly, while suppressing her feelings. After meeting Lee Gang-Doo, Ha Moon-Soo begins to express her hidden feelings.