Bob wasn't stupid he knew Jane didn't love him he just didn't care.
I THINK the author meant to write:
Bob wasn't stupid. He knew Jane didn't love him. He just didn't care.
I see whole paragraphs written with not a period at all.
What's up with people? Missing punctuation can change the entire meaning of the sentence. Here's an example, from Let’s eat Grandma! How to use, and not use the comma
These have two different meanings:
Let's eat, Grandma.
Let's eat Grandma.
Are you inviting her to eat or are you a cannibal with Grandma on the menu?
It's the same thing with periods. Lack of a period can mean changing the entire meaning.
We went out to the car whose sunglasses were tinted.
is much different than:
We went out to the car. Whose sunglasses were tinted?
So please, for the love of people who like to read, use punctuation. It may change someone's life.