Happy to play the part of the doting boyfriend, Gareth, 29, attended the press night for The Sound of Music this week, where he told the Mirror, "I was here tonight to support my girlfriend Faye.
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"It's the second time I've been to see her in The Sound of Music. I'm really proud of her, she's amazing."
Dapper in a grey blazer and jeans, Gareth posed for pictures with Faye — who stars as Liesl Von Trapp in the musical — following the performance in Regent's Park Open Air Theatre.
His new romance comes 10 months after he announced his split from wife Suzanne Moles last October. At the time, Gareth and Faye, 24, were starring in a touring production of Legally Blonde together and were rumoured to have grown close.
But Gareth insisted that the end of his three-year marriage to Suzanne was because they had "grown apart". He is now trying to finalize his divorce from Suzanne, with who he has a four-year-old daughter Missy.
A source told the Mirror, "Faye and Gareth are very happy. They aren't living together yet as they both travel a lot with work, but they spend as much time together as possible.
"Gareth's in the process of getting divorced. It's quite complicated, it takes a long time to sort out the financial side of things.
"He's trying to remain on good terms with Suzanne for the sake of Missy. His daughter is the most important thing in his life and he tries to see her as much as possible."