Will she get used to my size?

My size is 6 1/2 inches long and 2 1/2 inches thick. It is not a lie. I have been with my girlfriend on and off 3 years now and we finally have started to have . It hurt her very badly. She is starting to get used to my size but.. it has not given her any kind of pleasure yet. we are both worried about it but I know for a fact she recieved pleasure from her last boyfriend 3 years ago who was not as big as me. i love her and she loves me and we are both hoping she'll get used to it and recieve pleasure.. we also use lots of lubricant..and