Instantly double your wardrobe!

One word:  "Shopping"

If you ask 'Does this dress make me look fat?'
 they won't just look at you like "huh?"
 and will probably give you an honest answer.
  (OK, maybe that might 'not' be so good ;-)

If you find lingerie in their glove compartment,
 chances are it belongs to them.

When you run your stockings, you won't have to run to the store
 at the last minute to get another pair.

Explore your 'bi-sexual' within.

Save Money!  If you both go out to a singles bar,
 neither of you will have to buy yourselves a drink all night!

Just knowing that your 'partner' knows what it feels like
 to have their butt pinched, fanny slapped, legs whistled at, etc.

When you comment out loud that your 'hips look fat' -
 they actually leer in envy...

Having someone around who can show you dozens of ways
 to make your breasts look big(ger) without surgery.

From Denise:

Satin and velvet are more snuggly than denim and wool.

S'he understands the need for quality cosmetics.

You have even more excuses to go shopping
 and s'he may even carry the bags!

S'he won't expect you to get ready to go out on the town
 in 15 minutes or less.

The world needs more feminists in lipstick.

You can take the Cosmo Quizzes together.

Their new friends won't spend all day watching football.