What should i do, i really like her? Does she feel the same?

There's this girl ive known for around 5 months. We were decent mates without being proper friends, we'd joke around, bit a banter etc. A few weeks ago at a club i tried it on, she said that im really good looking but that she ccouldnt because i got with her mate at a party. I thought fair enough, and left it at that but know we're talking on fb most days, and about quite personal stuff at times. We both start the conversations mostly and she always signs off with lots of kisses. Does she just want friendhsip or more? Whats the best thing for me to do because i really like her but its akward beacuase of the thing with her mate?