I'd suspect the truth is somewheres in between. She was drunk, gave him a consensual BJ..then the next day, she felt bad, used, full of self-remorse..whatever..so she filed the complaint. Many guys weill cheat, especially if given the easy opportunit, but not many will take it to a violent forcing the woman..
A lot of wisdom in that conjecture. Most bad situations are not clear-cut. This one is very unlikely to be simple.