The Mad Men actress took to Instagram over the weekend to share a sweet photo of her and camera operator George posing in a garden. In the accompanying caption, Christina revealed that she and her fiancé had "proposed to each other". "We proposed to each other and we said yes!!! I will love and care for him forever," In response, a number of Christina's celebrity friends were quick to post congratulatory messages. "Christina!!! I love you, so happy for you both," gushed Kat Dennings, while January Jones commented, "Yayayayayayay!!!!!"