Leave a mark to show my husband I've been fucked." Karl bit too hard but I did not complain. "Oh, I wish there was another man here now to bite the o...her one. Would you like that, Karl?" Karl grunted, "Uh. Yes." I teased, "I don't want the cameraman to stop filming us. I want Rex to bite my other nipple. Tell Rex it is okay to bite my nipple." Karl stammered, "It's okay. Bite her." I pushed the envelope. "No Karl. Tell Rex he can bite my nipple. Tell him you want to see him suck on my. She shyly nodded her head but continued to sit on the bed. Billy got up and began to remove his shirt but stopped when his sister hadn't moved."Come on, you too," he smiled, "it's alright. We'll do it together."Slowly Betty stood by the bed and began to unfasten the top of her simple dress. Both twins watched the other as their clothing loosened. Billy's shirt was tossed on the bed and he unbuckled his belt and began to unbutton his pants as he watched with wide eyes when his sister's dress. Deeper, louder moans escape both their lips as he bends down to take her swelling hardening nipples lightly between his teeth, suckling and licking, circling each. He moves into her slightly deeper as his mouth and tongue slide up her neck to her ears, tickling, invading, wetting slightly.He covers her newest groan with his lips, his tongue invading her mouth, circling and dancing with her own. They taste their own elixirs on each other and it's very erotic, very intoxicating. "Mmmm ohhhh. By 2016, I had already been with a trans girl in a FWB kind of thing for a few months so I was by no means a first-timer in the trans dating game.Tomasa (her female name) was 9 years older than me and very outgoing with a strong personality. She was what most would consider a BBW or ‘big girl’ at 5-5” and nearly 180lbs. I must say though that she carried that weight really well (as most Latin trans do) with thicker solid legs and arms, fairly broad shoulders and a huge firm ass. When she spoke,.