Sitora Yusufiy said she had met Mateen online in 2008 and the two got married in 2009.
He "might have been gay but chose to hide his true identity out of anger and shame", she said.
A New York Times report cited a senior federal law enforcement official as saying that the FBI was looking at reports that Mateen had used a gay dating app.
Yusufiy said that her ex-husband had told her that he frequented nightclubs before their marriage, but that he did not tell her they were gay clubs.
CBS News said in a report that club-goers have told investigators that Mateen had been at Pulse previously.
The Orlando Sentinel and other news organizations also quoted regular customers at the gay bar as saying they had seen Mateen there a number of times.
Smith said he saw Mateen inside the club at least a dozen times.
Yusufiy, during an interview at her home in Colorado, said Mateen had seemed "perfect - American enough for her free spirit and Muslim enough to please her traditional family.
"This man was a simple, Americanized guy that was also from my culture. And, you know, had the same religion," she said.
"So I was like, OK , this could potentially satisfy my parents."
She had no friends or family in Florida, and Mateen preferred that she stay in the house.
"All I remember is being woken up by a pillow being taken
from under my head," she said.
"I hit my head on the ground and then he started pulling my hair. He almost killed me," she said.
"Because he started choking me. And I somehow got out of it and I tried to tackle him."
The couple separated within a year, and in 2011 Mateen filed for divorce, the NYT report said.
Mateen had attended the same mosque as Abusalha and they knew each other "casually".
Mateen had also been on a terrorism watch list for incendiary comments he once made to co-workers at a local courthouse.
The NYT said early examination of Mateen's life "reveals a hatred of gay people and a stew of contradictions. He was a man who could be charming, loved Afghan music and enjoyed dancing, but he was also violently abusive."
FBI director James Comey said that Mateen had once claimed ties to both Al Qaeda and Hezbollah - two radical groups violently opposed to each other.
Mateen had earned an associate degree in criminal justice technology from Indian River State College in 2006, the year he began working for the Florida Department of Corrections at a facility just west of Port St Lucie.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
