Marcus Johns and Kristin Lauria got engaged! The Expelled actor and his girlfriend have been dating for years, and they're ready for marriage.

While traveling in Europe, the 23-year-old web star popped the question in the most romantic way. They climbed on the top of a tower, and then he proposed.

"My best friend. I can't wait to spend the rest of my life with you. I am honored to be your future husband. You are by far the most spirit filled, joyous, pure, and genuine thing on this planet. How could I pass up this opportunity. I am so lucky to spend my time being by your side. I will love you and take care of you forever and always," Marcus wrote on Instagram.

Kristin shared a vlog of the proposal, and it is seriously emotional.

Congrats to the happy couple!

Click through the gallery to see their engagement photos.

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