I got in my car and drove to the diner.
That sounds nice. What made you want to go to a diner?
I needed time and distance from my boyfriend.
If you are having problems with your boyfriend, it is ok sometimes to remove yourself from the situation and go out somewhere. Time apart can sometimes help you cool down and resolve things more calmly.
It's fine since now my boyfriend is out at the park walking his dog.
It's good that you know when to take time for yourself. No relationship is perfect and its important to know when to get out for some alone time. That'll help you go a long way in recharging yourself mentally.