Awww, would you look at that?  The owner of this week’s Backseat Backside is all hugged up with her man.  However, he’s definitely not the same man whose heart she won on The Bachelor last year.    Who is this party girl?  Find out after the jump!

It’s Shayne Lamas!  She celebrated her 24th birthday at LAX Nightclub at the Luxor in Las Vegas.  Looks like quite the party!  She looks like she had a great time for sure, but rumor has it that it was just this kind of partying that caused Matt Grant to break up with her in the end.   Ah well, she’s still young - might as well get it out of her system now!  Happy birthday, Shayne!

[Images by Judy Eddy / WENN.com ]

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