*Insert offensive joke here*

The relationship between Ada and Barnes was tense, very tense at first because he claimed her piano but that is not the first time we see them together. I believe the relationship started on the beach, when he took her and Flora to play to piano the first time, because it is there that we actually get to see the soft side of Ada as she loves to play her piano and we see Barnes' too as he is first smitten with her as she plays. The agreement of keys for kisses is a tough one to think about, because we see that she is very reluctant to do anything with him but relents because she wants to have her piano so badly, the situation of course as you know escalates into the scene when they have sex for the first time, which in my opinion she didn't agree to just because she wanted the piano, he was good to her and didn't force her to lay with him, he asked and she agreed. She could have decided that she would only have sex with him if he gave her the rest of the piano as payment but instead she only chooses ten keys, why? Cause at this moment she made the choice, that the man would literally do anything just to be with her and after they have sex he decides that there will be no more bargaining, she'll either choose him or never see him again and she does, she chooses against her marriage and decides she actually genuinely loves this man and the piano was just an object. So no, I do not believe there was ever an instance of rape, except with Alastor attempts to have sex with Ada while she's still knocked out and for that, he deserved to be alone.