Keith Urban & Nicole Kidman Marriage Trouble? Alexander Skarsgard 'Big Little Lies' Kiss

Nicole Kidman stars alongside Alexander Skarsgard in HBO's upcoming miniseries, "Big Little Lies." But what does that have anything to do with her marriage to country music superstar, Keith Urban?

Apparently, the "American Idol" judge can't stand his wife getting "affectionate" onscreen with the "True Blood" heartthrob. Skarsgard plays Kidman's hubby in David E. Kelley highly-anticipated comedy inspired by Liane Moriarty's acclaimed novel. And although their relationship's totally professional, the National Enquirer insinuates that the attractions undeniable:

"Keith will be heartbroken... Though they were [kissing] on set, there's no denying the intense connection that grew between Nicole and Alexander," an alleged insider explains. "Given her and Keith's problems, I worry that this will put their marriage into a tailspin."

But what "troubling" issues is the couple already experiencing? The report doesn't get into that, but the snitch even claims that Kidman would keep "smooching" Skarsgard past the director's call to "cut."

Wow. 

Urban remains happily in love with Kidman, and he's not "jealous" of her work. GossipCop recently confirmed that such scandalous rumors about potential cheating are completely "untrue."

Thankfully, several Twitter fans have the utmost faith in their romance!

@EliseRamirez: "Can we all stop and appreciate how cute Nicole Kidman and Keith Urban are? I love that she seems so happy."

@camsaroyans: "i love nicole kidman and keith urban - they're so cute."

@feyrafferty: "WTF NICOLE KIDMAN AND KEITH URBAN ARE SO F*CKING CUTE F*CK."

@shanigan9: "Nicole Kidman and Keith Urban are so cute together I hope they stay together for always."

@kidmanizer: "...with Keith Urban, the first thing in his life is Nicole Kidman awwww so cute... I can't even... Omg perfect couple."

Do MstarsNews readers agree?

After divorcing actor Tom Cruise back in 2001, 48-year-old Kidman began dating Urban in 2005. They officially tied the knot in June 2006 and now share two daughters together.