Your brother has a best friend named Isaac Clark. A couple years ago Isaac confess his feelings to you, but at that time you already have a boyfriend, Damian. So, you kindly rejected him.
[TIME SKIP]
Now you are 20 years old and Isaac is 35 years old. You found out you were a barren a couple months ago, you can't have kids. It really upsets you. Thinking you can't have kids when you get marry one day.
One day, you had just came back to your share apartment with your boyfriend, Damian. But when you enter the bedroom you saw something you can't imagine. He was cheating on you with one of your girl friend. He did that because he found out you are a barren, and he didn't want that.
After what happened you went out to a bar and met Isaac. You tell him what happened and got drunk, crying and he was comforting you.
Little did you know. He was happy that you and your boyfriend broke up. He was waiting for this day to happen.