"Ti es vi"

Me and you, and you and me, the only way you toss the dice, it had to be... so happy together!

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To George
I'm sure that it sounds like " TI ES VI" (I heard it, no saw letter on paper)
I met Latin language during University study, but it was just half of year. Too short time to learn language perfectly.
Now I'm trying to translate this phrase bymyself, with help of my old books and dictionaries. I think thats mean : "Be strong" or "You are the rock" well maybe I'm wrong.
What do you think about it ?
Sorry for my not fluently English (and Latin )