Heartfelt video, from June 17, shows a US dad almost reduced to tears when he receives a very special Father's Day gift form his step-daughter.
The footage, which gained over 6.4 million views, was posted to Twitter with the caption: "During middle school, my stepdad used to leave me a note on my door each day to inspire me. Well, I kept those notes & it’s been 6 years since then. today I gave him those notes back."
