Fucking my in Law

I had to unexpectedly stay over night at my sistars and in-law's house.. i didn't have much with me so i'm only wearing her husbands tshirt and my panties.. it barely covers my ass but i guess she trusts me because she actually left the house and left us both here ALONE! now that she's gone i'm bored.. i go upstairs and find her husband laying in the bed and he only has his boxers on... i can see his hard dick.. his morning wood is tempting me so badly.. i want it.. i want his huge dick. i don't care that he's married or WHO he is married too.. i go in their bedroom and start touching it.. i start licking his hard penis and sucking it.. before i know it, he is fucking me.. we finish and we both came alot.. and he came inside of me.. i decided to shower afterwards but i heard something.. i came out of the bathroom to go to their room because i had left my panties in their floor and i didn't want her to find them because then we would be caught.. she would know he cheated on her and fucked me.. but when i was out of the bathroom i heard moaning downstairs.. i went downstairs and found out he was fucking her right after fucking me.. i just came all over his dick but now she's on her knees sucking his dick and getting fucked by him.. she tasted my cum and i'm jealous. i'm upset he fucked her right after fucking me.. i wonder if he is going to cum inside of her too. will he get us both pregnant..