Your girlfriend and roommate bonded when you went on your weekend fishing trip. You were reeling in an 8 inch trout, while she was taking 8 inches of cock.
(Ex) Lesbian Slut Update: Told the guy last night about my adventure and he agreed to help me... by calling a few friends over, and they all take turns fucking me, leaving me sore and leaking cum, and bringing my total number of cocks serviced to 10!