Evidence is mounting that Omar Mateen (inset), the gunman who murdered 49 people in gay nightclub Pulse (left) in Orlando early Sunday morning, was himself gay. Mateen’s horrifying attack on the nightclub was initially thought to be a homophobic attack rooted in extremist Islamic ideology. But now his ex-wife, Sitora Yusufiy (right), and former police academy classmate have stepped forward to say they think Mateen was gay, the same day it was revealed that Mateen had made at least a dozen previous visits to Pulse, and was a user of gay dating app Jack’d.