” Then she let go of my balls.Krystyn then got up and went to her shower. I went into my room to write her thank you letter. I was not going to m...ess around with my sister….I had not idea what she would do. I wrote: Dear Krystyn. Thank you for being such a wonderful sister. Thank you for letting me jerk off to your photos. Thank you for jerking me off onto your stomach. Thank you for swallowing my cum. Thank you for allowing me to finger fuck you. Thank you for letting me fuck your. She stopped moving so I backed off. Yet again, I thought she would leave.She did not.I looked at her back, thinking about it. I had not ground my dick against her ass, but our shorts were thin enough for to have felt it. I turned toward her and spooned her so my hardness pressed against her ass. I placed an arm around her and pushed it under her top so I could touch her stomach. She pushed back in protest, almost as if she was trying to get me off the bed.I pulled my hand out of her shirt and. I had extra ammo in my pack with a few changes of socks and my rain jacket and poncho. I kissed Anh and caressed her hips before I turned and grabbed the carbine and left, "see you when we get back."We were in the rear when the company left the fire base. In the field closest to the base we split up and waited for the birds. They came in and slowed while dropping and each platoon moved to one and began loading. The ride was not to bad even if the pilot did roll and do a lot of turns.When the. As I sat there and remembered Julie and Ashley I started to get hard and not wanting to jerk off where I could potentially be caught, even though I doubted it would happen as it was the middle of a day on a Wednesday and it was still reasonably hot, I got up and continued to walk. I walked for a few minutes and then saw her sitting on a bench. She was older, probably as old as my mom and she was blond like me. I could tell that she had big tits. She was wearing jeans and a red checkered short.