Munn, who is currently in New York City filming the Sarah Jessica Parker comedy "I Don't Know How She Does It," previously dated "Star Trek" star Chris Pine, while Morrison was once engaged to soap actress Chrishell Stause.
Morrison and Munn haven't yet officially gone public as a couple, but perhaps he's still getting to know her better first: Asked which item he would never want to find in a potential girlfriend's apartment, the Broadway veteran, who prefers a "real classy kind of woman," told Elle magazine: "A Snuggie.
The relationship proved short-lived, and the couple called it quits after four months.
Way back in the 1980s, Cher and Tom Cruise enjoyed a fling. Before marrying Heidi Klum, Seal dated Tyra Banks in 1996.
He passed away from a drug and alcohol overdose on July 13, 2013.
The actor enjoyed an intimate dinner with high school classmate Esther Song at Cafe Stella in LA on June 4.
"I had worked on Broadway with Jenna Ushkowitz and Matthew Morrison before.
Matt had been a friend of mine for years, and in fact we'd actually dated back in the day for a Broadway beat." saying, "There's the one about Lea and myself, and we were literally on set and I got a call from my publicist, and she got a call a minute later and we looked at each other like, 'What the f--?
"She's a normal, lovely person and totally grounded," says the insider.
"He's been living the high life for the past year and was often dating more than one woman at once.
Former ‘N Sync singer Lance Bass took actress Danielle Fishel to her high school prom – more than six years before he came out as gay. Ryan Reynolds was engaged to Canadian singer Alanis Morissette but the two never made it down the aisle.