Is it me???

My partner has a friend they were interested in each other they kissed and touched and occasionally talked about being more than just friends befor we met. They still talk in the phone text and facetime it has been time my partner has ignored me while on the phone with this friend one time my partner said we only talk because we work together I said ok they no longer work together but still communicate my partner has hung up on my to FaceTime this friend I have listen to my partner tell this friend they miss them they can have hour long conversations I have expressed to my partner how I feel about the situation multiple times how I feel like my feeling don’t matter and nothing changes I even here that was my friend before I met you am I over reacting? Need help

How long have you been dating? How long did your partner date her "friend"? It sounds like too many blurred lines, lack of communication as well as disrespect for your feelings and relationship.