Telling your family you're engaged has to be slightly nerve-wracking. You hope they're as excited as you are and, perhaps more importantly, that they won't say anything to embarrass you while you and your S.O. have them on speaker phone. Twenty-six-year-old Katie Mathewson had even more apprehension than most people when she was ready to announce her engagement to her grandparents.

This is because Mathewson is engaged to a woman, and her grandparents are people she described to Buzzfeed News as living "in a bit of a wealthy, white, heterosexual bubble." Mathewson explained her apprehension around coming out to them saying, "I’ve heard them make comments about people outside that bubble that discouraged me from thinking they’d accept their youngest granddaughter being gay."

Despite her fears, Mathewson knew it was time to tell her grandparents about her relationship when she and fiancee MacKenzie Hill took things to the next level and got engaged. She sent them a letter telling them about her upcoming nuptials and explained that she was happier than she had ever been. Still, she was prepared for a less-than-warm response.

“I knew I’d still love my grandparents even if they weren’t pleased with the news and that I’d forgive and understand their opinions either way,” Mathewson told Buzzfeed News.

Then, Mathewson's grandparents' response to her announcement came, and, as she told BuzzFeed News, she was brought to tears by the letter's simplicity and powerful message. In it, Mathewson's grandmother (for whom English is her second language) wrote, "The most important matters is your happiness with Mackenzie for the rest of your life." She also encouraged Mathewson not to listen to anyone who had a problem with her relationship, "the rest of the world will follow the ideas as time moves on," and promised that she and her husband would be at the wedding, so long as their health allowed it.

Read the sweet letter in its entirety here.

Huh. Old people these days. We really should give them more credit.

H/T BuzzFeed