If they break up, he's still the legal tenant.

Families break up, too.

Background Story; My fiance's best friend, recently going through a bad break up, has always rented (lives with her sister, her cats, and her sister's dog), but she thinks now it may be a good idea to finally buy as rents are high and even more difficult for ones allowing pets. 

Also codes can be changed for each new tenant or after an eviction, or messy breakup between a couple and only one stays.

This can be plaintiff or defendant in business disputes (partnership breakups), consumer DTPA claims, breach of contract, specific performance, probate (title issues), adverse possession/trespass to try title (quiet title actions for breaks in the chain of title), or suit for declaratory judgement (interpreting a contract or boundary).I am admitted to all TX state courts, and the Federal District Court for the Southern District of Texas. 

Looking to still do accounting but if I could find something that would break up the 8-5 rat race that would be ideal.

Now he calls me and needs extra month because of breakup and needs to find another place.

Beware that they may break up and only one of them may be stuck paying the rent. 

Once you have that worked out, then decide how you will break up the business should one of you want to exit.

It is much more complicated to break up when you own real estate together.