In love with a older woman

Me (16) is in love with a girl (20), she's into me too, I know that's fucked up but we understand each other very well, my family knows about me being close to her and they tease me about it. We both talked about it but figured out it won't work between us because of society and family pressure ofc, idk I just can't get over her. We're best friends at the moment, I wanna ghost her so that I can force myself out of the feelings, but then it'll be unfair for her. She says if I ever leave her out of nowhere she'll be very hurt, thinking about this makes me hurt aswell, I'm in a fucked situation, don't know what to do. I'd say I'm not that bad so been getting fine proposes lately but she's in my mind 24/7. Need advice 🤦