I'm finding it really difficult to work out what is reasonable and appropriate.
I rent a 3-bed house in London Z5 with 3 DC. I work part time and receive a top up of Universal Credit which helps with my rent and bills. I have a small amount of debt after divorce which I am paying off (under £10k).
DP and I have been together for 3 years. He met the children 2 years ago. We do not live together and he has a flat which he owns and pays a mortgage on. Last summer he was made redundant and has not found a new job since. He has been living off his redundancy pay out but I think that it must be nearly used up now. He is actively job hunting. In November he sublet a room in his flat to a lodger. This covers 75% of his mortgage. The lodger doesn't contribute to bills as that's included.
Since last summer he has been spending more time with us as he's not been in the office. This has been great as it's helped his mental health improve after feeling isolated during Covid, and he helps out with school runs and kids activities. My preference would be 3 days a week but before Christmas it became more like 5 days a week. I found it tricky as it's a very small house, and I'm an introvert - I do need a certain amount of alone time. I communicated this and it's helped a little although he seems to be spending more time here again recently.
I need to ask him to contribute financially. He spends a lot of time here. He has a healthy appetite. Although he doesn't buy many snacks himself, he certainly helps himself and enjoys them here.
It doesn't feel quite right that while he spends so much time here, his presence is costing me more, whilst he continues paying off his mortgage. He has a big asset there and I don't have a house or savings, only debt. However, I don't know how to calculate a fair contribution, when our heating and lights and TV and internet would all be on anyway, whether he was here or not.
Re: food, he often offers to cook us all a meal, but doesn't select meals the children will eat, so I end up adding side dishes myself to make a full meal they will eat a combination of. If I ask him to shop, he always buys the cheapest of everything. Whilst I understand that my income is low and he is not earning, I would prefer to buy less and slightly higher quality so we all still enjoy the meals.
I think it would be better to ask for a contribution, but I don't know how to calculate a fair amount whilst acknowledging that he's not earning at the moment. But overall, he is still in a better financial position than me and I will end up resenting the situation.
Any opinions would be gratefully received, thank you