My sister in law
i use to work with my sister in law when i was in high school, she was a couple of years older.we always would flirt and touch each other but she said i was to young at the time. long storie short. i married her sister and we hang together a lot, she caught me naked while changing to go swimming. she told me i had a big c*** and left the room. now every chance she gets she'll grab my c*** or she like to wear t-back suites and sit on my lap and get me hard. my wife doesn't seem to care when she sits on my lap or notice what her sister is up to. i'm having a hard time trying to be a good husband. i love my wife but her sister is so f****** hot i want to bang the s*** out of her. help what should i do ?