Woori the Virgin - Season 1 Episode 6 -

Kang-jae starts to feel left out, seeing Raphael next to Woo-ri all the time. Woo-ri senses this and tries to make it up to him by going on a camping trip with him. But later, she becomes devasted after she learns Kang-jae had lied about not knowing of Ma-ri's affair and how he had covered for her so that it wouldn't alter Woo-ri's mind about giving them the baby once it was born, putting their relationship in turmoil.