Nets forward Michael Porter Jr. said his personal life took a hit when his ex, former Disney Channel star Madison Pettis, publicly called him a “psychopath.” Porter responded to Pettis’ comments after she opened the floodgates on their relationship during a March appearance on the  “In Your Dreams With Owen Thiele”  podcast. “That was crazy. I wasn’t feeling that at all because, bro, we dated for what, three months, and nothing happened crazy,” Porter said during a Monday appearance on the “One Night with Steiny” podcast with internet personalities Aaron Steinberg and Celina Powell. Michael Porter Jr.…