<human>: I posted this to /r/relationships, but I'm hoping to get advice from a financial perspective as well. 

My boyfriend and I are discussing moving in together in the fall when his lease is up. We've been together for just over a year.

We both make a similar salary. He makes about $2K more than I do. We have been discussing how to share expenses and split the bills. We are both open to communication and discussion on this life change.

Expect is a strong word here, but I would expect this would be a landlord-tenant style relationship in the sense that I would cover all household expenses related to home maintenance. Plumbing, electrical, roofing, appliances ... If anything breaks, then that's on me. With regards to bills we both contribute to (water, electricity, internet, etc), I'd expect to split those down the middle. With regards to the monthly payment, I'd also expect to split that down the middle. The reason for that is that it's a reasonable amount that's about equivalent to his current apartment rent. If we were to find a place to rent together, the expectation would be that we'd split a rent payment 50/50. I see the house as a shared space so I think it's reasonable that we share the expense of the house. 

On the other hand, I will be building equity in the home and he will not. However, I did put down $60K of my own money when I purchased the house. 

Is there anything that should be put into writing to protect each of us?

Can you provide a brief rundown of the text in within 3 sentences?
<bot>: Boyfriend and I are considering moving into the home I own. We have almost identical salaries. What is reasonable for splitting living expenses?