Boob grazes don’t always mean what guys think. Often she doesn’t notice it happened. Padded bra and several layers of clothing makes for zero sensation. I’ve been boobed many times by coworkers, students and strangers at the mall with zero intentions of anything sexual. It’s just another part of her body. Hell, I’ve been boobed by men in crowded bars. I figured they were just trying to squeeze by.
I’d give more credence to eye contact, posture and hand/leg touching.