Hi, my name is Brooke and I’m new to this forum and this is my first post! So my bf has 2 cats. Both not fixed. One male named Deutch about 14 and one female named Fat Fat (we thought she was fat but turns out she’s 12.8 pounds and isn’t fat at all. Just a big girl with a pouch and LOTS extra skin. She’s our big blob<3) about 11. I was told by my bf and his mother they used to get along very well until they got pregnant and they kept one of the cats. Suddenly the baby cat and Deutch started ganging up on Fat Fat. It got so bad that they had to move Fat fat upstairs into my boyfriend’s room away from the two. Later on the baby cat got sick and passed away. They still keep Deutch and Fat separated because he will still try to sneak upstairs and attack her or try to “aggressively romance” her AND the big problem is he sprays upstairs and sometimes downstairs. They put a gate up on the stairs because Deutch is VERY skittish and terrified of noises and the gate. But out of no where, I’m talking YEARS later and about 4 months into me living there he suddenly got ballsy and isn’t afraid of the gate anymore and has been jumping over it or pushing through it. I’ll be standing right at the bottom of the stairs and if I turn away for a second he’ll try to sneak upstairs to spray and attack poor fat fat. I know you’re not supposed to yell at cats or really discipline them because it could make the spraying and bad behaviors worse. Especially since I believe Deutch already has separation anxiety from my bf’s mom. He’s her cat and he LOVES HER it’s so adorable. But when she’s at work and I’m here alone, poor thing is constantly meowing for her. Or he’ll start meowing for Fat Fat. It’s hard to tell but the low meows get louder and louder before he tries to sneak upstairs. When he does sneak upstairs my bf gets so angry and yells at Deutch and I told him not to but we really don’t know how to stop this :/ he’s to old to get fixed and I don’t think that will stop the spraying anyway because of his age. I can’t watch Deutch literally all day everyday when his mom is at work, making sure he doesn’t sneak upstairs. Any advice or training tips?