Astin, 28, proposed to Camp, 33, on Saturday after having dated since June 2013. The couple both announced the good news via Instagram, Astin beating Camp by a matter of minutes.
"I asked. She said yes!!!" the excited groom-to-be wrote for his audience of 878,000.
Camp followed up with the same picture and a similar message on her own Instagram: "He asked. I said YES!!!! "
The actress is best known for playing Aubrey on Pitch Perfect, where she met Astin, who plays Jesse.
This will be Camp's second marriage and Astin's first. No word yet on the date or location of the impending nuptials, but given that the two are both big fans of Hawaii, somewhere tropical is a solid guess.
Congratulations to the love birds!