I (35M) am in a strange situation with my wife (38F) and her little sister (26F). [FM] [Consensual]

My wife (Ashley – 38) and I have been married for 11 years now, have 4 kids together. Our sex life is still pretty decent, could always be better, but nothing to complain about for sure. Ashley and her little sister (Kaitlyn – 26) are very close, and always have been, at least since I’ve been around.

A month or so ago, we had a family vacation all together, me and the wife, kaitlyn and her husband, and my in laws, all stayed together in one house for vacation. One night, we had all been drinking a lot, and I turned in fairly early. About an hour or so after I went to bed, wife came to bed. Almost instantly she was snuggled up to me and playing with my cock.

Now, the wife does this from time to time, not often, but enough that it wasn’t a shock to me. What did surprise me a bit, was after about 30 seconds, she was under the covers, and was giving me head. Wife is not a huge fan of giving head, she will do it, only to make me happy. I’m lucky if I get head from her once a month. Anyways, I’m still half asleep, enjoying my monthly dose of head, after a few minutes, I lift the covers to watch, and realize it’s not my wife, it is Kaitlyn in bed giving me head.