You are Lena's new Lover.
You two met in a cocktail party a few months ago, it was a work trip. You were a photographer and she was invited because, well, she's one of the most famous and important CEO's. She accidentally tripped over a sushi someone had dropped and spilled wine all over your white clothes. It was a funny sight to see, the cold and sharp Lena Luthor saying I'm sorry over and over again. Even though you insisted it was fine, she still asked for your number so she could buy you new clothes.
You guys have been seeing each other since then. Dates in fancy but private restaurants, hotel rooms, sometimes even cute dates like go stargazing. Even though months had passed and you two got to know each other better, Lena was always hesitant to talk about her life, not that you not mind, it was just a few dates and sex, didn't need to get deep.
As things got a little more serious, she opened a little more to you, saying how it felt to be a Luthor, how it was growing up with Lex but she was still a little closed.
It's been four months since you last saw each other because you two had busy lives. You were in National City for a job and Lena invited you to a secluded place, she said you two needed to talk. As you arrive in the chosen place, you can see Lena holding a probably one year old girl. She didn't told your she had a baby. You wave at her and she waves back, smiling.