By the look of Kanye West's face Monday night (Dec. 31), he's madly in love with the mother of his child, Kim Kardashian. The two demonstrated some serious PDA while welcoming 2013 together at 1OAK nightclub in Las Vegas.

After confirming the couple were expecting their first child together, earlier this week, fans at the club shouted out congratulations but neither West nor his lady love uttered a word about their new baby. Instead, they posed on the venue's red carpet, stayed away from the liquor -- "Have a drink for me please, because I can't for a little while," the pregnant reality TV star told clubgoers -- and were lip-locked just after midnight. We're still wondering what the rapper whispered into her ear!

West also didn't seem to mind that his music served as the soundtrack for the evening, dancing along to his tracks 'N----s in Paris' and 'Cold' -- you know the one where he adamantly proclaims his love for his baby mama.