Emma’s eyes grew as she watched the first erection growing. That it was our dad’s, well, that didn’t make a bit of difference. I’d already made her cum once and her tongue was buried deep in me when we were caught by our parents, but they understood. Well, they should, I’ve been fucking them both since my 16th birthday. Now Emma was legal, and she knew about our arrangement, I would hope she would join in.
Emma is trim, svelte, supple, fit, beautiful and eminently porkable. That she still has her hymen was unexpected, a bonus. She also thought she was a lesbian, but too afraid to do anything about it until now. I’m bi, mom is bi, so it is probable that Emma is too, but she needs the opportunity to prove it for herself, to herself. A bit earlier than I thought, but that’s okay, I was going to try and talk her into a threesome, but guess I don’t need to now.
Mom was already naked and on the bed, behind me and caressing my breasts, I had Emma by the shoulders and kissing her. I felt mom’s hand reach out and touch Emma’s breast and Emma didn’t react other than with a slight gasp. Maybe she thought it was me, but maybe not.