The couple got engaged during the band’s show in Seattle.

Years & Years welcomed two fans to the stage during a recent gig in Seattle, pausing the show as the pair got engaged in front a cheering audience.

Matthew and Tyler were later congratulated by the band on Twitter, after taking to the stage mid-show.

Olly Alexander recently said that he has been forced to avoid social media due to anti-gay bullying.

The band’s frontman says that he has learned not to check Twitter because he wants to avoid rape threats and other abuse.

“I get trolled,” he told NME. “The usual stuff – sometimes it’s homophobic, like gay hate.

“But I don’t understand why people ‘@’ me on Twitter to say ‘Olly Alexander can’t sing’ or ‘Olly Alexander, you’re ugly as f**k’.

“If we’ve been on TV I don’t go on Twitter for a while after,” he added.

“I get some people who are really gross and make rape jokes about me.”

“It’s f**ked up. That’s why I can’t read too much anymore because I don’t need to be seeing that shit.”

The ‘Shine’ singer has been vocal about the need for gay role models, recently releasing a music video celebrating sexuality.

Earlier this year, the 25-year-old revealed that growing up in a “straight world” caused him to suffer from anxiety and depression.

He continues to win praise for his frank and open approach to sexuality, and his willingness to help young fans come to terms with their own identity.