@Iman94,
Yes, I know "children"
But at some point in time, we need to look at that and realise that those children are fully aware that Mum and Dad don't laugh, don't show much love and that's not good for them. They will take what they see, feel into their own lives and may not even be capable of truly loving, as this is all they know.
I would state if you wish to remain for now then fill the house with love still because those kids deserve to know what that is.
Then you are doing the right thing by your children.
At some point as well, you have to do what is right for you. We only live as "us" once.