What should I do in this situation?

I'm in a relationship with a girl for a about a year and lately the relationship got a little chilly .She always said she has to write /read..etc and we never talked.We had a couple of fights and then she said that she doesn't love me anymore and that now she likes an actor and she said a lot about him , but I insited not to separate .She agreed to try to love me again.A week has ped since then .I tried my best . She loves me now but it's not the same . She still is cold and she wants me to change a lot .She wants to change my entire persoality. I still love her but I wanna do what's best. I can't say I'm happy at the moment .What should I do?