She's openly flirting

There's a girl in my class, and she's getting too forward in flirting with me. Firstly, she comes and sits with me, and in our university, we have adjustable-height chairs. She pulls the lever and disturbs me, scrolls through my phone, etc.

Also, when we were in the electronics lab and were soldering, she asked if she could help me. When I needed the soldering wire, she gave it to me and said, "For you." She did the soldering for me later.

Also, in the very same lab when I was on my phone she came and tingle me knees and waved my hair with her hands. Man I was red and shocked. Even she asks for my Hotspot despite having her best friend beside her and I can see her best friends reaction and it says clearly that she's hitting on me.

Also, we went to drink coconut water, and it was amazing. She sat beside me, offered to let me sleep while she handled the teacher, asked for notes, called about my birthday, and most importantly, bought me a birthday cake.

She's way too forward and I kinda like and want it but at the same time I'm shy to ask her what she feels.

What should I do guys?