I like her very much but we are good friends , what should i do ?

There is a girl that i like very much , she is outgoing , kind , very positive vibe , everytime i am around her its like i forget about all my problems and she seems to like me too

She came to me to fix an app on her phone , i was sitting on the chair and she put her hands on my upper leg to watch what i was doing , said sorry if it bothers you if i sit like this and i told her " dont worry , its no problem " and she kept staying like that

Another day i was showing some tiktok video to one if my friends and she pressed her chest very close to my arm to look too , we were at the gym she was sitting on the chair and i was sitting on the floor next to her , she started shaking her leg and i grabbed her ankle in a playful way and asked her " do you have too much energy " , she smiled and started shaking her leg faster

We were sitting on the sofa and i was laying down next to her and we were joking and i grabbed her thigh , she said " hey , what are you doing ? " while smiling and took my hand away

what should i do ? i really want to ask her out but we are good friends and i dont want to ruin that