Partner keeps breaking things

He don't see a problem because you always fix the problem, and that's the problem. It's costing him nothing thus no motivation to change. His weight sound unhealthy potentially health complications involved or will be involved if things keep going on this direction. I don't know am Just guessing here. Look into how to ease him into that conversation, health is wealth.

He doesn’t help replace them? Excuse me!? 😭 I’m sorry, idk how you have the patience to deal with that. You should sit down & have a talk with him regarding his weight, especially for his health & well being. & he should definitely be helping replace these items… it can be pricey & it shouldn’t fall on only you.

The fact you made this post tells me you're tired 😫 If it continues without talking about it it could lead to you feeling resentment the next time, because there will be a next time, that he breaks something. If he gets argumentive or depressed he might need therapy. Say it the best you can, in a loving way, but definitely say it.

His health can’t be great. Maybe done at it from That angle.

So next time he breaks something tell him “we’re gonna go shopping today to buy a new couch and you’re paying because you broke it, and I paid for the last one anyway”. He won’t let it affect him if you never let it affect him. Let him take responsibility for the things he does.
As for the weight itself you can do it as a teamwork “let’s take a walk together, let’s go gym together, let’s start eating healthy together, I’m going to start w tonight’s meal because I’m on a health journey too and I want you to join me. I’m gonna buy a cheap smart watch to track my daily steps, I’m aiming for 10k, would join like to join me?” Health journey is more successful if it’s done as a team instead of pointing and blaming, start w yourself and hopefully that inspiration for him will come from you.

While I’m glad you love your partner at any weight, this is a problem for one his health and two your mental health. He is putting all the fixing on you both physically and financially. You’re at your wits end and I can tell because of been there in a different situation, but I was always the fixer. This won’t get better until he takes responsibility or decides to leave. For his sake I hope it’s responsibility.