Ashlee Simpson’s experience of co-parenting with Pete Wentz has been “amazing”. The 39-year-old star has son Bronx, 15, with her ex-husband, and Ashlee and Pete have managed to maintain a good relationship since their split. During an appearance on the ‘Broad Ideas with Rachel Bilson and Olivia Allen’ podcast, Ashlee shared: “Co-parenting has for me been amazing. Pete’s a great guy.” Asked if she’s won the “co-parenting lottery”, Ashlee – who was married to Pete between 2008 and 2011 – replied: “Exactly! That’s what I was just about to say. Won the co-parenting lottery.” Evan Ross, Ashlee’s hu…