Which way to go???!?!?!?

Soo there is Girl "A" that I like and I think she knows it but me and Girl "B" have a really good relationship going but I like Girl "A" more but she doesn't really like me but she always seems intrested in how me and Girl B are doing and doesn't like talking about her boys cause well she says none of them like her which could be true but idk which way to go, to the girl I like more that might not like me orr the one that I am positive likes me