That would be the exact reason he would propose to her..
That's how the cookie usually crumbles.
They will live together sooner.. Even if you diasgree..
Just enjoy that new life of yours. I'm pretty sure you will learn lots of things from him. :)
He will move in with you and your mom eventually. . he will be your step dad.
Don't worry, if he proposes to your mother, then you will have a family. Just enjoy your new life, hope he will treat you good.
Yes, if he proposes, then eventually he'll move in.
If you're finding it hard to accept, just remember that everything happens for a reason, and maybe this guy is the person who'll make your mom and you and your siblings - if you have some - happy.
You don't have to call him dad, but just try to support your mom in this, it's a hard process to go though, I've been though it various times in my life. Just try to put yourself in your mom's shoes; the previous divorce, the pain she's been through, and now finding someone who loves her.
I hope he treats you with kindness and with a fatherly love.