So, I'm going to be a single dad and I'm not OK with this.
I don't think that someone can come with advises.
The only advise would be: fix it, if you can.

What I've noticed is that people think about dating in this situation like dating in high school.
20yrs dating!=30yrs dating !=40yrs dating.
To be able to see a women in Oshawa, I had to ask a friend to keep a look on my kids.
(I'm from Mississauga)
1/2 dating time==4h babysitting time.
Doesn't work.
Relocation is a keyword and you have to be prepared for this.
Mortgage, rent,...forget it.
You might have one or the other.
Nobody will land in your home like that.

I don't really know.
That's my thoughts.