[M4F] BWC Brother-In-Law for Mommy Milkers Sister-In-Law

Hello DPP,

The other day I went with my wife to visit her sister and I don't think she was expecting us because she had a very skimpy tank top on that could barely cover her huge tits (which are MUCH bigger than my wifes). This was a first for me because normally she dresses very conservatively and I can never really tell that she has tits that are that big. Well this immediately got me going and I'm pretty well endowed myself and I swear she noticed me bulging really hard because her eyes got big when she looked down in that direction. We kept exchanging glances throughout the day but neither of us said anything because my wife was right there.

We didn't say anything about it yet, but now I'm curious if she did it on purpose... I've overheard my wife and her on the phone and her saying how her marriage isn't the greatest and hasn't had sex in a long time. Was she trying to rile me up on purpose to see if I'd make a move? The way she kept glancing down at my bulge makes me think that she was...

I'd love to play this out with someone or even just talk about it. 😃

About me: I'm 6'0", athletic, well groomed, young professional, and well hung (9" long x 7" thick). Kinks: Big tits, titty fucking, cock worship, cheating, skimpy clothes, breast expansion