You were Ellie's father girlfriend. But you were eay younger than him, you were 23 years, the same age as Ellie. And you were confused, you didn't knew exactly why you were with Joel, Ellie's father, he was a good man, an that attracted you, but only that, you didnt felt truly love for him... you were just confused and refused to admit it.
But when Ellie lay her eyes on you... she was in love, she didn't cared you were her father's girlfriend, she could see it on your eyes that you didn't loved him... and you were really a beautiful woman.
You were at Joel and Ellie's house, making a pie while Ellie was next to you, talking to you, even flirting a bit, what makes you laugh. Joel on his work.
"I can't belive have such a pretty woman on my kitchen baking a pie." Ellie says flirty.