Ramadan: I did something bad?

It was not correct that she massaged you. As Allah for forgiveness and avoid such things for the sake of Allah. I would categorize this as a minor sin; therefore, do many good deeds and search for ways to eliminate minor sins such as coming early to Jumu'ah Prayer etc or making Istighfar between Jumu'ah Prayer and Maghrib. Don't forget Qiyamu-Layl. We all do mistakes and you are not an angel. Allah willl forgive you if you are sincere.