Jax Taylor is head over heels for his and his estranged wife Brittany Cartwright’s former publicist, Lori Krebs. “I love [Krebs] to death. You can’t help who you fall in love with. Everybody deserves to find happiness,” Taylor told an inquiring paparazzo outside a Los Angeles gym on Wednesday. “I’m in the happiest place I’ve ever been, and I couldn’t be happier right now. My mental health has been so amazing since I’ve been with her,” he went on, adding that he’s “in love with her.” According to Taylor, he and Krebs, 42, “love each other very, very much,” and their relationship is “the best thing that’s ever happened” to him. “I’m with…