[nYNAB] How do I track rent when my rent is shared with someone else?

I just started using YNAB, so my budget is about half empty until I get paid again next week (only spending the money I have on the bills due before I get paid again). I'm currently sharing a townhouse with my boyfriend and we're splitting rent down the middle.

How do I handle this in YNAB? The rent comes out of my account, so my first instinct is to put the full amount of the rent into the budget, so that the accounts balance with my actual bank account. I could just include my half of the rent, but then there's money coming in/going out that isn't accounted for.

The boyfriend will transfer his half to me before it's due on the first. How should I go about tracking that? I can see two options: placing a line on the budget for a negative amount (uhh, this feels wrong?) or adding a transaction for the amount when it's given to me. It'll be a monthly occurrence, so I'm leaning towards this.

Is there an easier way for the program to do this?