What’s some advice for living with a partner for the first time?

It’s good to pause the bickering for a minute to enjoy some good things about living together then once things cool down it’s very helpful to have an open conversation about what your expectations are and what his expectations are then find some middle ground where you both make concrete agreements on who is responsible for what and when. You guys can always re-work these agreements later, but it’s good to create a clear understanding that you both mutually came up with and find fair.

Just so you know though you’re not going to be able to bully or nag him into being more personally responsible. That’s something he hast to want for himself. These are life skills he probably hasn’t learned yet. If you can, without copping an attitude about it, try not to enable him also. Expecting him to be a mind reader, you getting frustrated and doing abcd task anyway because you’re sick of waiting around for him to do it or he did it, but not up to your standards doesn’t help either of you become a team.

What are you fighting over?

Does he need a mother lol, some don’t like the responsibility of having to actually run a house.

He should set the ground rules

You need to try and work out just what you are fighting about, then you might be able to determine why.
After that hopefully to can work in improving things.

Acting like an adult is harder than it looks! Give each other some space and some patience as much as you can.

Get married that way you're shitty day won't have to end at work...lol

Sounds like a classic power struggle. The only question is who is going to back down and let the other one lead.

Give him some space. You're smothering him.

How old is he? And how old are you?

Develop some alibis

Sit down with him, calmly and peacefully, tell him that he has waited for this moment to be on his own, probe his independence and show all the people who doubted he was ready, that they were wrong. If that applies. If not I don't know.

Try having an honest discussion with him about where this tension is forming from. Moving out the first time should be an exciting & fun time especially when living with someone you’re in love with. See if there’s pet peeves either of you have to maybe create less fights. Enjoy the perks of young independent freedom. Having a place to call your own can come with heavy responsibility but it’s not only that & the fun of it should be highlighted.