Long boring story but a 'friend' and I had a major falling out a few years ago and never really got a relationship back, nor do either of us want to. But we have lots of mutual friends and see each other at parties etc. In theory this is fine - we no longer have a one on one thing going on and we can deal with bumping into each other, but I have recently found out she's been slagging me off and being adults rather than schoolgirls I just want to move on. Shall I have a conversation with her or just stop inviting her to things completely? Not really interested in resolving things - the friendship has run its course.