so hard in love
All I wanted was to break your walls
All you ever did was wreck me
I came in like a wrecking ball
Yeah, I just
She rushed in, and smashed (metaphorically) him and their relationship, because he hurt her first, so she's bas getting even. She didn't mean to do so much damage, but she tested her strengths and "wrecked" him. (And he will probably have to pay a lot of money for repairs on hi house!).
I think that he is saying that his "friend" heard the church or whoever saying that they were sick minded, or not right. The church thinks that it is a sin to be gay, and they know it.
She is not physically on fire, but she is still burning down, more intensely, and Eminem, or whoever this man is, is just watching her go through the pain and burning.