I've been seeing a girl for a few weeks now and after hooking up a few times, the last time I was at her place, I finally met her roommate. I stayed the night and the next morning her roommate texts her after she leaves for work saying I'm "very cute". The plate has been down to do anything I want so far, and I get the impression the roommate is also very open sexually. The main difficultly is that the roommate has a bf, who I also met, though I'm a bit older and a few notches up in SMV. So theoretically I know it's possible, it's just a question of how to go about framing it.