Brad Pitt is reconnecting with his past. Amid the 53-year-old’s bitter divorce fromAngelina Jolie, he has “been texting” ex-wife Jennifer Aniston, a source close to the Mother’s Day actress tells Us. Pitt, who didn’t have Aniston’s cell number (they divorced in 2005), tracked it down through “a tangled web” of contacts so he could send well wishes for her 48th birthday February 11, explains the insider. From there, Pitt — who is currently battling Jolie, 41, for joint custody of Maddox, 15, Pax, 13, Zahara, 12, Shiloh, 10, and 8-year-old twins Vivienne and Knox — “confided in Jen,” reveals the source. “Brad told her he’s having a hard time with his split and they exchanged a few texts reminiscing about the past.” A SURE THING Unlike Pitt, Aniston, who married…
