As some of you may know, I have been in a sexual relationship with my adult middle daughter for about 2 years, starting when my wife's medical condition caused her to not want sex anymore. I have also started a relationship with my adult granddaughter (see Grandpa to the Rescue). I got a call on the Thursday before Father's Day from Patty saying they couldn't come on Sunday as they were going to her husband's family. No problem, I like her in-laws. She said she would see me on Friday with my present. Friday arrived and when I opened the front door, I was surprised to see she had her older sister Tina with her.
I say surprised because since I was home alone, I was expecting to be able to have Patty in bed for awhile. The look on my face must have showed what I was thinking. Both girls smiled and said, "Happy Father's Day, Dad! We're your present!" I looked at Patty who told me that Tina had found out what we were doing when she stopped by Patty's one afternoon when I was there. When the door was locked and seeing both cars in the drive, she had peeked through a gap in the drapes of the bedroom window and saw us together. Tina said it shocked and excited her at the same time. When she confronted Patty about it, Patty explained that she would rather help me by having sex with me than having me cheat on their Mom with someone else.
Tina then told me that instead of being mad about it, she was actually a little jealous of Patty and she wanted in on the fun, too. She had just separated from her husband and she was feeling lonely and horny. She knew I wouldn't do anything to hurt her. At this point, I should probably describe us. Tina is in her early 40's, 5'5", 135 lbs with 32B tits, shaved pussy and lips that are made to kiss and suck dick. Patty is 2 years younger, 5'7", 140 lbs, 34C boobs and a trimmed pussy. I am in my mid 60's, 5'8", 170 lbs, 7" cock when hard, with a slight downward curve.
I looked again at both girls and asked Tina if she was sure about doing this. She answered that she was very sure and showed me by coming closer and kissing me deeply on the lips. Wrapping her arm around me, she pressed her body against mine so tightly, I could feel her breasts against my chest. She pushed her tongue into my mouth to duel with my tongue. When we broke the kiss, she asked me if I had any doubts. I didn't as the bulge in my pants proved the point. Patty came to me and said it was her turn and planted her lips on mine and putting her hand on my crotch to rub my erection to further hardness.
With my arms around both of my girls, we headed to the bedroom. Once there, our clothes hit the floor and I looked at Tina naked for the first time in many years. She was in good shape for having had children. Not as toned as Patty, who works out 3 times a week, but nice. Her tits are capped with puffy areolas the size of a half dollar and eraser sized nipples that were hard as diamonds. Patty's nipples and areolas are smaller, but extremely sensitive. She can orgasm just from playing with them.
Tina stepped into my arms and we kissed. I ran my hands over her body, cupping her ass and playing with her tits. She reached down, wrapped her hand around my hard, drooling cock and started to stroke me. Patty got behind me and molded her body against mine, rubbing her sensitive tits on my back. Reaching around, she cupped my balls in her right hand. Tina moved down, kissing my nipples and continued down until she was eye-level with my cock. She licked the head, paying attention to the sensitive underside. Opening her beautiful lips, she swallowed me until her nose touched my pubic bone. Slowly, she started bobbing her head back and forth while swirling her tongue around the length. I was starting to get weak in the knees, so I suggested we get on the king-size bed. I also didn't want to neglect Patty. I got on my back with Tina between my legs and I told Patty to straddle my face so I could use my tongue on her. She loves to have her pussy eaten!