AJ McLean has his “fingers crossed” he can get back together with his estranged wife. The Backstreet Boys singer, 46, and Rochelle DeAnna McLean, 42, announced in a joint statement in January they had called it quits on their relationship after a temporary separation they started in March 2023. But AJ – who married Rochelle in Los Angeles in December 2011, and with whom he has children Elliott, 11, and seven-year-old Lyric – has now told People about his hopes they can reunite: “We’re co-parenting our kids the best we can, and everyone’s really having a good time. “We still spend as much time …