What should I do?

I love my boyfriend of 3 years but this Covid pandemic has played havoc on anything, we have a business together so we work together, I have 3 children from a previous marriage.  He thinks the whole world is against him and feels my children should be perfect the house should be perfect and life isn't like that, it really gets to him and he doesn't feel like he can talk to me and feels on verge of nervous breakdown saying he feels trapped.  I suggested he get his own place but he doesn't want to be away from me just everything else, mainly my kids I think! They are teenagers 17, 15 and 13 so can be tough but they a relatively good kids, they do chores, do school work and help out, yes they sometimes forget to take a glass out or accidently break a glass, but this is every day life to me.  His socks go missing and this drives him crazy! It is all so complex but I feel it is destroying us!