Seduced is probably a better term, than what we think of as rape, physically forcing someone. Given that a priest, (an many other adults like a teacher) has many psychological advantages over a teen such as his authority, respectability, and is in a position of trust I think it can still be considered a rape just due to the the victim's age. There are other methods of "force" besides physical force.
I am glad that you escaped. I imagine stories like yours happen far more frequently than we will ever know.
I guess everyone's different but having lived through what I now know was 'grooming' for months, I knew enough to know what was right and what was wrong and what I didn't want to do. The guy was a rich lawyer and respected in the community where I grew up plus this was in 1974, so I never told anyone except my mother who blew it off because I think she was intimidated.