My bro-in-law has been married to my sis for more than 11 years and they really love each other! But he can't stop wanting to fuck me every single time he sees me... and this particular time I had a trouble with my rent and had to stay on their house for a couple days so I have to admit I'm a little slutty and sometimes I walked around naked to provoke him a little after a shower... but this time my sis left for a few hours and he surprised me on the shower! Long story short... he fucked me hard and made me swallow his cum