You're Acting, but I'm Not

"When Nathan comes to pick me up on the day of the wedding, he loses his footing and falls down a flight of stairs that's several feet high. He's not badly injured, but he bumps his head on the steps and ends up with jumbled memories. He mistakenly thinks that I am his first love, who had once hurt him. He reacts violently whenever he sees me. At this time, I found out that I am pregnant. The doctor says that the good news might be able to awaken his memories partially. I rush off to find him, holding the medical report. However, I accidentally overhear the conversation between him and his friends. "Nate is always full of ideas. Now he's even claiming that his memories are jumbled up! As long as you don't get bored, Olivia will never be able to force you to get married.""Don't spout nonsense. I do love Liv, and she's the only one that I'll ever love. I'll just have fun for half a month more before I settle down and get married.""Half a month? That isn't even enough time to flirt with all the female models at the club. Can you really be satisfied with that?"Nathan's expression turns cold as he snaps, "I'm not an irresponsible jerk. Liv and I have been together for so many years. "I'm definitely going to marry her. Call someone now! I want the one from yesterday with a tiny waist and a big bottom. It excites me to look at her!"Trembling, I tear up the notice from the hospital and turn to leave."