Yesterday I kissed my best friend and now i don't know what to do.. please help ! !

I, 16f, have known my best friend since we were in preschool. She, 15f, has always been there for me my whole life, and I can't imagine it without her. A few years ago, as I began to enter puberty, I started experiencing homosexual feelings. After I realized what was happening, I came out to my best friend before anyone else, and to this day, she’s the only one who knows.

About four months ago, my friend told me she had started experiencing the same feelings and was scared because her family is very religious. I comforted her as best I could and made sure she wasn’t alone. After that, we grew closer than ever, sharing everything with each other. I’ve always thought of her as a sister, never anything more.

However, two months ago, I noticed she started becoming more touchy and even began flirting with me. At first, I brushed it off as nothing, but then she started doing it more often and in more obvious ways.

Last night, I decided enough was enough and planned to confront her about it today. I texted her to come to my house, and after a while of talking, she finally admitted that she had a crush on me. I was silent and just stared at her until she kissed me. I don’t know exactly what I was doing, but I kissed her back.

Afterward, I freaked out and told her I needed to leave. She’s been texting and calling me, but I’ve been too scared to respond. I feel like I just lost my best friend, and now I have no clue what to do.