Think of the possibilities. I should not be doing this . . . (but you're the cutest guy I've met)(but my mind isn't calling the shots right now)(but I want to see if I can have an orgasm)(but if I didn't feel so good I wouldn't have started), etc.
I need to get home . . . (so hurry up)!
If a guy thinks any of these things he's got a reasonable belief that finishing the sex would be as consensual as starting it. What a nuthouse that state has become.
That was my first thought, who's to say he didn't take the "I gotta go home" statement as "hurry up please". Women (and I use that term loosely) like this give the rest of the normal women a bad name.