The Rook mate move was just added to show you what he could have done, but there were no moves after I took his queen
Mate in 1 but Resigned???

Qxf3 is forced mate isnt it? Because you are threatening Qg7# (Unstoppable) and if they take the queen Rxe8#. Its a very nice tactical pattern
Off-Topic but just wanted to share this game very quickly you can delete it if I am not supposed to post games because I am not sure please let me know. Anyways, here I took his 'free' queen and he instantly resigned but twister he had Mate in 1.
I was Black in this weird game