The decision is final. Sofía Vergara’s ex-fiancé, Nick Loeb, has lost his final appeal in L.A. to gain custody rights of two frozen pre-embryos the former pair created prior to their 2014 split. “Sofía’s so relieved she can finally put this chapter behind her,” a source tells Us. While the years-long legal battle was “stressful and demoralizing at times,” the Modern Family alum, 48, is “done thinking about” the businessman, 45, and instead focused on the “beautiful life” she’s created with husband Joe Manganiello. “Sofía is just so in love with Joe,” says the source, noting that Vergara — who’s already mom to son Manolo, 29 — is even considering expanding with the actor, 44. “She can see he’s a natural with kids,” the source continues, but “they’ll talk through…
