I want to check my ex wife's facebook to make sure she is getting fat
Why would you want to look into your wife like that? Does it really matter if she's fat?
She's the best woman, but sometimes I get jealous. She has great taste in fashion and it would make me feel better to see if she has gained weight.
I get where you're coming from, you want to feel like you made the right choice in divorcing her, but this is not the right way to go about it. Stalking your ex-wifes facebook to make sure she's not as attractive now is a horrible thing to do, and you shouldn't even be happy if she has because that's terrible for her health. If you ever loved her then you'd want her to be healthy at the very least.
Okay, she's gotten a little fat.
How does it matter if your ex is now less a attractive or more. You should stop stalking her and focus on your own life. You need to move on.