“He was always socially awkward,” the classmate told WFTV9.Mateen, who had married again, this time to Noor Salman who bore him a son, also visited Pulse several times over the past three years, according to club patrons.The gunman who attacked a Florida LGBT nightclub had attended the club before the attack and had used a gay dating and chat app, witnesses said. Kevin West, a regular at Pulse nightclub, said Omar Mateen messaged him on and off for a year before the shooting using the gay chat and dating app Jack’d. It is harder to explain why Omar Mateen had a gay dating app on his phone and messaged at least one of the regulars several times. At least four regular customers at the Orlando gay nightclub where a gunman killed 49 people said Monday that they had seen the killer, Omar Mateen, there before.“Sometimes he would go over in the corner and sit and drink by himself, and other times he would get so drunk he was loud and belligerent,” said Ty Smith, who also uses the name Aries. ORLANDO -- A man who says he was Orlando shooter Omar Mateen's gay lover is speaking out following the attack on Pulse nightclub that left 49 people dead, and dozens more injured.In an interview with Univision anchor Maria Elena Salinas, the man -- who was called "Miguel" to protect his identity -- said he first met Mateen on the gay dating app Grindr.
Miguel said in an interview with Univision that Mateen, who was killed by police during the rampage on the Pulse nightclub early on June 12, was gay.West said he didn't think anything of it at the time.On Sunday morning, he said he met with FBI agents and showed them his communications with Mateen.Rather, Miguel claimed Mateen was acting on revenge after being with a Puerto Rican man whom he later learned was HIV positive."He hate gay Puerto Ricans for all the stuff he did to him," Miguel said."I believe this crazy horrible thing he did was for revenge."Miguel said that Mateen's wife knew he was gay, and that his father forced him into an arranged marriage. everybody."Miguel said that Mateen never appeared to be violent."He was looking for love," Miguel said. What could have driven Omar Mir Seddique Mateen, a New York-born security guard who was the son of Afghan immigrants, to such a horrific act of violence -- the biggest terror attack on U. According to his estimate, Mateen visited Pulse twice a month over a period of three years. He didn't seem like the kind of guy who just did what he did. "My partner said that he was very nice [and seemed] comfortable." Prior visits to Pulse are a line of inquiry investigators are pursuing, sources involved in the investigation tell CNN's Jim Scuitto and Evan Perez. Chris Callen, who worked at Pulse as a performer, told CNN's Anderson Cooper he'd seen Mateen dozens of times at the club.One couple, who work together as drag-dancing performers, said they’d seen Mateen as many as a dozen times at Pulse.Ty Smith and Chris Callen also said they’d seen him escorted drunk from the club more than once. Maybe he got radicalized and hated who he was,” Callen said.Univision reported the FBI told the network that investigators have spoken with this man, but a law enforcement official would neither confirm nor deny this to CBS News.The official told CBS News senior investigative producer Pat Milton that Mateen was a frequent user of online dating sites seeking relationships with both men and women.