The more I sit here and think about this situation, I'm just about convinced that NO ONE would EVER think that this situation was OK! Let me type it out:
So, yesterday evening, Lauren calls me and says, "Hey, I was just letting you know that I'm leaving tonight and I probably won't be back." I'm like, "OK, where are you going?" Her response. To Shawntee's. I'm like, OK, are you sleeping over? Her response?Yea.
Now, a quick disclaimer: Shawntee is Lauren's EX-GIRLFRIEND. Supposedly, they are now "best friends". Question 1: Would you EVER be OK with your partner SLEEPING OVER at their EX'S house, regardless of if they are best friends OR if your partner is "really close" with their family?
So then, she gets mad at me because I went off. In my opinion, that shit is NOT COOL and it is UNACCEPTABLE. Lauren is 26 YEARS OLD.

YOU DO NOT HAVE SLEEPOVERS AT YOUR EX'S HOUSE!!!!!!!

So then, she gets mad at ME for getting mad at HER that she thinks I shouldn't be MAD!

So what makes this even worse is ALL WEEK I had been saying to Lauren, "I have an issue with your relationship with Shawntee. I think that when I come to visit for the weekend, she should NOT you every day. OH! BUT GET THIS!!!!
When I came to see her last weekend, she says to me, "would you be mad at me if I left the house for a little bit?" I'm like, what do you mean 'leave the house'? Where are you trying to go and leave me here?! Her response? I NEED TO TAKE SHAWNTEE TO HER AUNT'S HOUSE.

QUESTION 2: If your girlfriend came THREE HOURS to see you and you don't see each other except every two/three weeks, WOULD YOU WANT TO LEAVE HER AT HOME SO YOU CAN GO TAKE YOU EX TO HER "AUNT'S HOUSE?!?!?!
NO! So then, I said, you know what?! Fuck this, so I called my mom and decided to go hang out with her for a little bit. THEN! When I get home, she gets mad at me and says, "ALL YOU HAD TO DO WAS STAY HERE AND WAIT FOR ME!" WHAT THE FUCK?!?!?!?! She says, "well, if we're going to live together, I'm not going to be able to stay attached at your hip all of the time." Huh?! WE DON'T LIVE TOGETHER!

Anyways, I have a lot of thinking to do. Am I flipping out for no reason or am I entitled to be upset?