Kanye West and Kim Kardashian The world's most expensive relationship? Kim and Kanye splash out 2.5m on each other in ...

theyve forked out 1.25million each on cars, holidays and other pressies

Expensive business: Kim Kardashian and Kanye West leaving Uptown Nobu restaurant together

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AH, the first throes of a new romance... all luvvy duvvy and whispering sweet nothings.

Unless youre Kanye West and Kim Kardashian.

Then its whispering a sweet 2.5million the amount the couple have dropped on their fledgling relationship in just FOUR months.

The ego-stroking spendaholics have become so obsessed with flashing their cash at each other that theyve forked out 1.25million each on cars, holidays and other pressies.

Only dating officially since April, their romantic gifts to each other have included:

A 478,000 black Lamborghini which Kim bought Kanye for his 35th birthday in June;

A 21,000 white sapphire-encrusted gold skull statue which Kanye gave Kim in July (um, thanks?);

Plus theyve spent 446,000 on just getting to their many holidays in London, Paris, Cannes and Mexico by private jet or first class.

My source said: As much as they adore each other, theyre both very strong-willed and there is a bit of a power struggle in the relationship.

"Both Kim and Kanye want to show they have their own money and fame outside of them getting together.

But theyre so besotted with each other that although theyre spending so much, they barely bat an eyelid when they see the price t! ag or bi ll.

After all, theyre both multi-millionaires at the start of a big love affair.

And theres no signs of it slowing down either.

As Kim, 31, says: When Im in love, you cant tell me anything. Im in love with love!

Hmm. Her bank manager might have something to say about that.

My insider continues: Its coming up to their six-month anniversary and theyve got a lavish weekend planned.

Both Kim and Kanye have told friends that they want to get each other the most extravagant gifts.

Mind you if it all leads to a Kimye wedding theyve still got some way to go to top the 6.3million Kim and Kris Humphries spent on their bash ahead of their 72-day marriage back in August last year.

Guys, just make sure my names on the guest list!