Older sister's hair

Older sister (28F) is staying at our parent's house for some time (parent's wanted to have smaller house after me and her moved out). As I (25M) needed to find myself a place to live I'm also staying with them for the time being. One and a half month now. Our parents have regular 2 bedroom house with 3 people in it. So on top of them there is an extra sofa downstairs. I've been sleeping on it and sister and her dog have been using the other room. Today parents decided to swap it the other way so I'm sleeping with sister now for the first time in god knows how long. She fell asleep shortly after we both went to bed but I'm lying here listening to her breathing (she is a very heavy sleeper) and staring at her hair. I still love her so much but I know I can't say it out loud. I wish her all happiness in her life but I also wish I was the one with her.