Help with talking

my best friend and I are together for 3 years we love each other a lot but I made mistakes that moved him away from me. Now we are back again but im not sure how be like how we used to be so if anyone would advice me topics on which I could talk to him and he will still enjoy (im a girl and we talk on every issue)

dont try too hard just be polite and friendly,plan fun things together as it takes time ,let things be normal