Lose the "I Should Be Enough for Him" Mindset
Men like trying new things. So when your guy asks for something new in bed, all it means is that he wants to try something new. Is that how most women interpret it? Heck no! Being the super-sleuths of relationships, ahem, we don't take anything at face value; instead we dive deep below the surface searching for a murkier, more sinister reason. And the conclusion we generally come to is this: "If he wants something new in bed, it must mean he's unhappy with the sex he's having" or "Why does he need all these props/fantasies/porn DVDs when he's got me?" Both of these reactions are overreactions, and, more often than not, neither one is true. You don't look at him oddly if he orders something other than a burger for lunch, do you? Or a glass of red wine instead of a beer? Humans need variety. You need variety. Instead of feeling intimidated by it, embrace it.
No, You Won't Look Fat
There's another reason why we're not rushing to pull on that French maid outfit or wear the tiny underwear he bought us. It's the embarrassment factor: We're scared we'll look fat or feel ridiculous. In fact, it's the main reason women say they're not more adventurous in bed. It's not that we don't have a naughty streak; it's just that our self-consciousness over powers it. But, if you're wearing a French maid outfit, odds are, he's not looking at you as a whole, not at your "problem" areas (he probably doesn't even think you have any problem areas).