Joe Manganiello and Sofia Vergara announced their split one week ago. For a full week, people have been trying to figure out how two hot people managed to get sick of each other, especially when they really did seem well-suited for one another. We heard various theories, like Joe’s sobriety and Sofia’s social drinking, and we heard that Joe wanted to be a father and Sofia wasn’t interested in having another child (her son Manolo is 31). Many of you thought the “Joe wants a kid” story came from his camp, like he’s painting her as “unwilling to give him a child.” I didn’t really take it that way – I think he changed his mind or she did, and it was probably pretty complicated. Anyway, Page Six has another story about “what went wrong” and their sources are basically saying just that: it’s complicated and they fell apart for a variety of reasons.

One source claims Sofia is living it up in Italy after taking care of Joe: “Sofia’s living her best life. She’s spending time with her friends after being stifled in a relationship with a largely unsupportive partner. Sofía was always there to take care of Joe, while his career was never what it was when they met. I think he’s been threatened by her success and joie de vivre.”

Joe’s sobriety: Reports soon claimed that the Manganiello’s longtime sobriety had impacted their marriage because Vergara, who’s currently a judge on NBC hit “America’s Got Talent,” is not sober — which multiple sources told Page Six is not the case. One friend who is close to both Vergara and Manganiello told us: “Joe is fully secure and at one with his sobriety, and while sobriety is a continuous practice, his ongoing commitment to being sober was never in any way threatened by being married to someone who drinks responsibly. It’s a pathetic attempt to come up with an excuse.”

Separate lives: The date of separation is listed as July 2; however, the couple has been living separate lives for a “very, very long time,” multiple sources told Page Six. The mutual friend said that the marriage was fueled by “physical chemistry, though also a lot of loyalty and respect. Neither of them cheated. They very much did their own thing for large stretches of time and were frequently apart, but they were always able to still feel that passion for each other when they saw each other, but that flame has now gone out.”

Sofia is fine & Joe will move on: “Sofía seems to be doing absolutely fine — she has all the time and the money in the world to do whatever she wants next,” the mutual friend added. “Joe seems a little more dejected but also resolute in knowing this was the right way to go. A lot of friends expect that he will ultimately move on to someone far younger and will start a family; he’s always wanted kids, and that clearly wasn’t going to happen with Sofía.”

Joe & Sofia will both be fine: A source close to Manganiello said: “They have always been supportive of each other and continue to be.” The mutual friend agreed, adding, “Sofía and Joe will both be completely fine but … absolutely no one expects their circles to continue to overlap or for there to be any real continuing friendship.”

[From Page Six]

“They were always able to still feel that passion for each other when they saw each other, but that flame has now gone out” – basically, two attractive people got tired of f–king each other. It happens! It took like nine years for it to happen, but they had a good run. I kind of think these sources are probably right on the money: Sofia did care for Joe and she was supportive, but she kind of thought he would have a bigger career (and he didn’t) and that affected their marriage. And I think Joe will move on with someone younger and start a family, and that will probably happen very quickly. And Sofia will continue to be beautiful, rich and successful.

Her photos from her birthday trip to Italy are gorgeous.

Photos courtesy of Sofia’s IG and Avalon Red.