Get out your tissues.
We know you're probably thinking, "There's no way a YouTube video is going to make me cry." But seriously, get out your tissues: Because 10-month-old Mary Lynn Leroux's reaction to her mom singing is heartbreakingly adorable.
"Mommy's going to sing a song," Amanda Leroux coos to a giggling Mary Lynn at the beginning of the video. "You want mommy to sing a song, honey? Let me know how you feel about the song."
Amanda launches into Rod Stewart's "My Heart Can't Tell You No"...
And Mary Lynn loves it so much that she's literally moved to tears.
"No one can explain why, not even I. I can sing any other song and do not get the same reaction from her," Amanda told Storyful (via Yahoo). "It's too adorable to keep all to ourselves."
One YouTube commenter who claims to be Herve Leroux writes, "That's my granddaughter. It breaks my heart every time I look at her. She will probably be an actress one day. LOVE her to pieces. xxoo"
In which case, we'll see you at the Oscars, Mary Lynn.
Meanwhile, we'll go refresh our box of tissues.