They’ve only been living together for a week, but Bridget Marquardt and her director-boyfriend, Nick Carpenter, are already bickering.

“We usually have fun together, but going through all these boxes has been a little bit stressful,” the E! reality star, 35, told us at last night’s Nylon magazine party at Skybar in West Hollywood. “I told Nick that he has to help me get rid of things, but every time he tells me to throw something away, I get all pissed at him.”

Especially when it comes to her Hello Kitty collection…

“Nick made me give away my Hello Kitty TV, my Hello Kitty microwave and my Hello Kitty toaster,” she groaned. “I got to keep the Hello Kitty cordless phone.”

And then there’s all that Playboy memorabilia. “I have Playboy pillows, sheets, towels, barware,” Bridget said. “[With] a lot of clothes, I’m like, ‘This shirt’s so cute, but do I really want to wear that now?’ There are some that have special meaning and some that are just Playboy clothes.”

Bridget, who says she’s already donated some of her excess belongings to Goodwill, snagged a $1.7 million five-bedroom Sherman Oaks, Calif., pad for her and her beau.

Guess it really paid to be a gal next door!