Kim Kardashian reveals her 'sex rating' with Kanye West

Kim Kardashian Reveals How Compatible She and Kanye West Are in the Bedroom
Kim Kardashian Reveals How Compatible She and Kanye West Are in the Bedroom

What do you get the man who has everything for his birthday? A blog post sharing details about your sex life with the whole world!

Kanye West turned 39 on Wednesday and, "since it's Kanye's birthday week," as Kim Kardashian West writes on her website, she researched their astrological compatibility -- including their sex rating based on their star signs.

"I did a little research about Libras and Geminis and found out they're a perfect match!" Kim said. "One website even said that we were one of the best matches in the zodiac. We're both air signs on the same wavelength. SO true! We've had an amazing connection right from the start."

WATCH: Kanye West Showered With 39th Birthday Praise by His Kardashian-Jenner Family -- See All the Love for Yeezy!

The 35-year-old reality star revealed that sisters Khloé Kardashian and Kendall Jenner first got her into astrology and explained that her and Kanye's zodiac signs dictate they both love "travel, surprises and communication."

See images of the couple:

As for their sexual compatibility, Kim brags, "Libra/Gemini sex gets a 5-star rating because we're so in tune with each other."

Earlier this week, the Keeping Up With the Kardashians star shared a sweet shot with her rapper hubby on Instagram and wrote, "Happy birthday to my best friend! I usually would be scared for us getting older but as each year passes I'm just happy we have more time on this earth together!"

"I love you so much and hope this year brings you so much happiness," Kim concluded.

Yeezy -- who recently did a little gushing over his wife, saying he is "crazy" about her -- tried to put on a surprise show in NYC, but was forced to cancel it when thousands of fans flooded the streets.