I'm a 22-year-old straight male dating a 23-year-old woman.
This is by far the most sexual relationship I've been in, which is great, except one part is freaking me out: I recently "caught" my girlfriend masturbating with her roommate's panties.
(She knew I was coming over and wanted me to catch her.) It turns out she has a habit of sneaking her roommate's worn underwear, masturbating while smelling them (or putting them in her mouth), and then sneaking them back into her roommate's laundry basket.
She has also used her roommate's vibrator and dry-humped her pillow to orgasm.
When both pairs were doing the eye-gazing task at the same time — meaning they were looking at each other — they were far likely to report feelings of affection than when they were doing any other task. Hall and Chong Xing published research that suggests there are five different styles of flirting.