3 weeks ago, there was a flat party I invited her to.

I was told my a flatmate (a mutual friend) that I had told 2 people, including him, some pretty sexual things concerning her and I. I don't remember, but I certainly said it.

She has been really cold with me over the last couple of weeks or so, but she did send me a birthday message on the 24th June.

The mutual friend has told me she would like to talk to me, that I shouldn't be worried and that she isn't angry or upset - I think she probably is.

I just don't know how to go about this. Do I send her a message asking to meet up and apologise, or do I wait till she gets in touch?