lenster13

I need input from my peeps...I have been friends with this girl for quite sometime,we went out a few times here and there.Never had that boyfriend feel towards her.mostly a sister kind of feeling..anyway I haven't been seeing anyone but this friend found out I was talking to another woman and all hell has broke loose. I figured she just had a crush on me so I told her we were not a couple and will never be,I consider her a sister..She totally went apeshit on this woman whom I'm very good friends with but not only that I had to block her from my phone.
Bottomline it has turned into almost a stalkerish kind of situation,I just want to be done with it...I do care about her feelings but it driving me to the point I just want to tell her off,any suggestions what or how I should deal with this? thanks