LTR (21F) is 9 weeks pregnant. She rents a room with a couple. I (24M) also rent a room with a couple who are also my best friends.

We're both on the same page. We both want to stay together (we're very happy together so far), and after much thought, we've both decided to get our own place together. It'd be a 2 bedroom, and one of the bedrooms would be a guest room / office for my freelance work. She'll be bringing her German Shepherd.

Our price range is the same as what we are paying now (combined) and we would split everything 50/50 (I think she makes slightly more than me but I choose to avoid discussing incomes).

Now, I've made these decisions already and I've only mentioned the above to give context on my situation.

My main concern now is the whole co-signing a lease and stuff. Besides sharing a baby (She's agreed that I will get a paternity test before I sign a birth certificate), I want to avoid as much legal obligation with her as possible. No marriage, etc.

We will begin searching and moving in around the beginning of the year so we're saving up now for the deposits and stuff.

Now, am I ok co-signing a lease with her? Should I get it all on my name? or hers? I'm clueless on how these things work, please inform me.

Like I said, me and baby mamma are very happy right now. Since the beginning of the pregnancy we've not had any arguments. Any shits tests or comfort tests thrown my way I, IMO, pass flawlessly. BUT, I do want to be as fucking prepared as I can if shit does go south. Worst case scenario we split and I fight the uphill battle for custody, but the chances of that right now seem low, but always possible.

TLDR; Questions are above in BOLD.