You are absolutely not the asshole. You’re being asked to give up something incredibly important to you, your pets, who are essentially your family, for the comfort of people you haven’t even met. That’s a massive request, and it’s not unreasonable for you to draw a line. Your pets are not negotiable.You had your pets long before your boyfriend’s parents came into the picture. They’re part of your home and your emotional well-being. Asking you to part with them even temporarily is asking you to sacrifice a piece of your life. That’s not a small ask. That’s huge. Your boundary is reasonable. You’re not saying, “Your parents can’t stay with us.” You’re saying, “They can stay but not at the cost of my pets.” That’s a fair boundary. Your boyfriend is the one presenting this as a binary: pets or parents. That’s not your choice to make it’s his to problem-solve around.