What do you think about my plan to stalk my ex?
That sounds dangerous. Why do you want to stalk them?
Because I want to know what he's doing with his life since he kicked me out of it.
Just leave them alone. Trust me, it's for the best and you're not likely to get the closure you seek.
Fine. You're right. It was a bad idea.
I'm glad that you changed your mind about stalking him! You will both be happier with your decision since he can live his life, and you can begin to move on. You will be much happier when you spend less time thinking about him.