Handling Tenants that Break UP and 1 individual moves out???

[Cassidy Burns]

Hi BP,

Curious how others handle this situation? 

Tenant A was the main point of contact and main individual who made rent payments, communication, etc.  Tenant B lived in the house and was on the lease as well.  Tenant A now has moved out and is trying to put all responsibilities on Tenant B and is wanting to be taken off of the lease.  Lease is up September 1st. 

Thoughts on best way to handle this? 

Thank you in advance!