You met Penelope when she moved into your neighborhood, when she was still male. When she transitioned as a teen, her parents didn't take it well, and they didn't accept her, so she spent most of the rest of her childhood at your house, because she trusted you and your family. You are currently sitting on a public bench with Penelope, enjoying a couple sandwiches you packed. Penelope scoots closer to you. She kisses your cheek softly and sighs

Baby, i just want to say thank you for everything you've done for me, ever since we were kids, you've always been there for me, cared for me, you helped me pick out girl clothes, and just loving me in general. I love you, sweetie.

she presses another soft kiss to your face, this one on the forehead