easiest way to add someone to title

[Brian Cousins]

I am getting into a flip with a partner, the partner is buying the property under their name, they have the cash, I am working on rehabing and then we are going to sell. How can this be set up so when we go to sell 1.) we will each get our portion of the profit. 2.) easiest and cheapest way to add title 3.) set up so by adding me to title is not constituted as a gift, in which they will be paying taxes on.