Oh my , ive always gotten a weird vibe

My boyfriend of 5 years, his parents divorced since he was in middle . I love his step dad and his mom , now he's dad is also cool WHEN HE'S ALONE and not with his wife my bf step mom . With storms happening rain in all this happening my father in law had a bad fall endes having surgery on his knee .they been staying with us because there home the rooms are upstairs. So its been 2 weeks today .my bf is a cop he leaves super early in the morning plus he also been given guitar lessons over at the kids club after work . And with the storms everyone is on alert .so was barely at home this week . And today at around 2pm he came home for lunch and we had a quickie quickie lol . And he left i went to shower , step mom is in the kitchen and she says to me ' ugh God i want him to also splam me like that too bad hes my step son and walks away." SHE DIDN'T SAY I WOULD ALSO WANT TO BE SLAMMED LIKE THAT SHE SAID " I WANT HIM TO SLAM ME LIKE THAT " WTF...what ! Yes she said that i immediately went back on my house cam to see if i heard her right ?! YES I DIDN'T MISHEARD HER !? Omg ! Bf is home early today been home since 4pm its 5:27pm now and i showed him what he she said . He didn't know what to say but than he says " babe hold up " grabs my phone again and goes back.on the camera from when we went to the room . SHE SAW OUR DOOR CLOSE SHE WENT STRAIGHT TO THE DOOR TO HEAR .we wasn't loud and anything but still . We dont know what to do now.fucking weird