For better or worse, Trisha Yearwood is sticking by her husband Garth Brooks’ side. The couple’s marriage of almost two decades was recently put to the test after Brooks was sued by his and Yearwood’s former hair stylist, who accused “The Dance” singer, 62, of raping her inside of a hotel room in 2019. “It’s heartbreaking for Trisha,” a source recently spilled to a news publication regarding Brooks’ sexual assault scandal, which unveiled an alleged request from Brooks to have a threesome with his wife and the plaintiff. “She loves Garth more than anything — she never expected this.” Yearwood’s…