Oh being content on being on my own every ever, of course I can never be, but what choices do we actually have.
Our children come first, for me that would include bring a third party into our home , so I have no choose.
I am not sure of the age of your children, mine is 4 I had a break up with a partner in June, not his mothers and he stills mention her, so for me to bring someone else in again, they would have to be someone so special.
Other option find another mum with a child and have sleep overs. The kids will enjoy it, and got someone to chat with, could take it in turns to visit each others house.