For J-Lo, the 42-year-old singer is said to have "finally found what she's been looking for" in Casper Smart, 25, whose actions mirror his surname as he's rumoured to have already proposed to multimillionaire Jennifer, promising her babies "before it's too late."
And Kim, who still isn't divorced from husband-of-72-days Kris Humphries, has embarked on a very public whirlwind affair with rapper Kanye West, who she says she has known for years - and who is said to have been obsessed with the star for a very long time.
Scene delves into the wedding plans of these two couples, and reveals what makes their relationships tick…
Kim & Kanye
After years of lusting after the reality TV star, Kanye West finally won his girl last month, after he and Kim officially stepped out as a couple. Flaunting their love all over New York - much to the consternation of Kim's sister Khloe, who believes the new romance could affect her divorce from Kris - Kim has already reneged on her promise to "not live in a fairytale… and be a little more realistic [about love]", as pals say the pair are already talking babies.
"She's falling very quickly for Kanye now that she can see him as a lover rather than just a friend with benefits," spilled a New York source. "She thinks he'll be a great father. He loves kids and was so excited about the arrival of Beyonce's and Jay-Z's little girl." Adding, "He's already told her that one of his goals is to be a dad."
And babies are high on Kim's agenda, after the 31-year-old recently lamented, "If you were to ask me in high school where I would be at [this stage in my life], I would have said I'd be a housewife with four kids." And the reality TV star appears to have a learnt a lesson from the Kris Humphries marriage scandal, admitting that if she is going to make another marriage work - her third, after being married to music producer Damon Thomas from 2000-2004 - she has to cut back on work.
"I realise I can't be this work machine all the time," she told Glamour. "I have always been the one in a relationship. I like that role, I want that best-friend partnership."
But one person not impressed with Kanye's choice of wife-to-be is Beyonce, who is said to have put a blanket ban on the rapper bringing his reality TV show star girlfriend to any super-A-list get-togethers.
"Despite Kanye being one of Jay's closest friends, Beyonce wasted no time in banning Kim from being invited into their circle, which is exclusive to say the least," a friend of the Crazy In Love singer insisted. "Beyonce is used to hanging out with Chris Martin and Gwyneth Paltrow - she's in a totally different league to Kim."
J-Lo & Casper
Head over heels in love with her toyboy backing dancer, J-Lo, is said to have accepted Casper's recent proposal - touched that he gave her his late grandmother's ring.
And despite her friends and manager, Benny Medina, being against the relationship, Jennifer has been telling friends Casper is "exactly what I need" after enduring years with controlling Marc Anthony.
"She's said she wants to marry him," said an insider. "He provides what she hasn't had in years. He's very supportive and devoted."
And Casper, who now sits in on all of J-Lo's business meetings is further acquainting himself with her multimillion-dirham brand and, thanks to his not-so-busy schedule, is free to be at her beck and call.
"He exists only for her," a mole told Us. "Marc controlled her, and now she's in control."
And the fact that the 25-year-old has proved such a big hit with her children, twins Max and Emme, three, has left the American Idol judge in no doubt that he's the man she wants to have more kids with.
"She knows that she doesn't have all the time in the world to have more children," said a source. "She's positive she wants to be with Casper forever." Adding, "She wants to have a traditional family. She loves how playful he is with the twins."
But throwing a spanner in the works are the rumours that Casper's family were behind his speedy proposal, with a source telling The Enquirer, "Some people in [Casper's] family are dirt poor… He's bought presents for his mom, his twin sisters, some cousins and a few other people, [but] the people who have been left out are jealous, and it's created a big family feud." Adding that one of Casper's aunts recently flew to the US from Australia to try and get in on the "family lottery".