I know it sounds bad, but hear me out.

My (21f) and my husband (23m) just got done building our house. It took a while, lots of missed events and financial difficulties but we did it. We finally have a place to call home after a long journey. While we were building, due to circumstances at my moms house and there being no room for me to live there without bunking with my sister that I already shared a room with for 17 years, I decided to stay with my husband and his family.

Living there wasn’t bad, we had a small room, but didn’t care, all of our stuff was in storage and were waiting it out, for the first couple months, everything was fine, lots of hosting with friends/family weekly, I started to like living there, but living with SIL(18f) was probably the worst part. It’s an old house, you can hear literally everything..I mean EVERYTHING. We tried to ignore most of it, just turning up the TV or going out to the house (we built a home on the backwards part of his parents property) so we had a safe space while the construction crew wasn’t there. The problem started a little before the house was finished.

SIL and her boyfriend(20m) I should say live with my in laws, her boyfriend has parents and a house with his own room, he just chooses to stay there 95% of the time. The issue rose when they announced they wanted to start trying for a baby in January of this year at a friends baby shower. We all thought it was weird, very long awkward silences and exchanged looks across the room. SIL is a freshman in college and her boyfriend is an entry level first year electrician apprentice. No plans to get married or move out or buy a home, they just wanted a baby. Which meant more of hearing the process.

My husband and I just moved into our house late last month and all has gone well, until we started getting calls from friends and family telling us what SIL and her boyfriend were doing. I guess my in laws didn’t like what they were doing (what sane parent would?) and told SIL they didn’t want to hear anymore of this because they thought they were just using it as an excuse for uninterrupted and unquestioned sex. Which they put on proud display for the whole house to hear. They also started limiting the time her bf spent there.

The calls started coming in March when family members would call and tell us what SIL and her bf were doing. I guess now that in laws didn’t want that happening in their house, they needed to find other places to do it. So with the excuse that they were “trying” SIL would act surprised after she checked her phone while out at family events and just hangouts to obnoxiously announce “omg I’m ovulating!” And immediately rush off to the closest bedroom or closed off area at whoever’s house they were in. Her grandmother, aunt, uncle, cousins, anywhere. Everyone was too embarrassed to say anything and just let it happen.

Until she tried my house. Her and her bf strolled in with the intent of just “checking it out” I said “sure! Once you’re pregnant I’ll give you guys a tour!” SIL immediately got sour and asked “once I’m pregnant?” I responded with “yeah, sorry, you’re not welcome in any bedroom of my house while you two are trying for a baby, I’ve heard of you guys doing it at XY and Z’s house and I’m not comfortable with that happening here” and just like clockwork, SIL checks her phone and claims she’s ovulating and that they “need” someone to go sleep together, I said “ok, go to the house or his house, the only bed here is ours, and you two are not using it”

They both stomp away back up the hill to my in laws and house and proceed to rant and tell them how unfair I’m being and that I’m just flaunting my money in their faces since I know they can’t afford a house. Not my problem, if they can’t afford a house then don’t have a baby. SIL thinks they’ll raise the baby off her remaining college trust (only about $20k left) and then when bf starts making money, they’ll buy a house. Bf thinks he’ll “fly through the apprenticeship” thinking he’s going to skip several years in the program since he “knows more than everyone else”.

I truly don’t know what rock they’re living under next to a pineapple in make believe world but I’m not enabling this. I truly believe it’s an excuse to screw in other people’s houses and I swear I’ve seen a chart on their wall with several family members names and a check next to them basically tallying off how many peoples houses they’ve managed to fornicate in. My house won’t be one of them. I know SIL is still on BC because her pills still show up to the house every month even though she claims she doesn’t take them. This is the weirdest shit I’ve ever come to Reddit with and truly don’t know wtf is going on with these people and their entitlement to sleep in other peoples houses. AITA?