I think it should be gratifying that your boyfriend helped you revise your paper. The reason is that the revised paper should belong to the joint efforts of the two of you. Your paper is well written, and the ideas are all there. You have a foundation, but it may be that the text is combined or polished. After the guidance of my boyfriend, the paper became more fluent and vivid. The foundation is your grades, and the decoration is your boyfriend's grades, so there will be good results. If you feel sorry for yourself because your boyfriend has changed well, you will have the idea of letting your boyfriend bow. If your boyfriend knew you would be under such pressure, he might help you change. You know, everything needs cooperation, and only cooperation has a greater success rate.