You can catch and release a fish, you don't have to lie and make it promises.
When you go fishing and you catch something, that's good.
If you're making love and you catch something, that's bad.
Fish don't compare you to other fishermen neither and don't want to know how many other fish you caught.
In fishing you lie about the one that got away. In love you lie to still be friends after you let it go.
You don't have to necessarily change your line to keep catching fish.
You can catch a fish on a 20-cent nightcrawler.
If you want to catch a woman you're talking dinner and a movie at the minimum.
Fish don't mind if you fall asleep in the middle of fishing.