can i have my name on two leases?

i am currently considering moving out of my current house and moving in with my partner. i am having some roommate issues that have not been resolved after over a year of asking and waiting for change, and ive reached my limit. i am signed on the house lease until august 2026, and i plan on paying the rent/fixed utilities until the lease is up. my question is, can i add my name to my partners apartment lease so that i can get a key to the apartment/legally be allowed to live there without paying rent there until my current lease is up next year. (my partner is completely fine with covering the cost of the apartment since im already paying rent at the house) the apartment is through DTN and my house is through an independent realtor.