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You add mostest at the end if I love you to signify you love your partner the mostest of all. Whoever says I love you mostest automatically loves the other partner more than he or she does forever and HAS to accept.
Dominic: I love you.

Stephanie: I love you more.

Dominic: I love you mostest. 💙
Stephanie: wow! You love me more than I do!? Guess I have to accept it.
by TheMostCorrectPersonToEverLive February 28, 2018
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