Aroused ex allows me to pleasure her moist vagina, resulting in ejaculation on her panties

A horny ex-lover of my roommate let me rub her pussy through her tight panties. She\'s a skinny, pretty brunette with a small, juicy pussy. I got her super wet and horny, and she ended up climaxing all over her panties. It was a steamy encounter with a couple and their fetish.