Lose interest means to stop caring about or being engaged in something you once liked. Attention, enthusiasm, or motivation fades, and you feel less inclined to continue.
We need time to lose interest in things. Don DeLillo
When things are too easy I lose interest in them so I find ways to complicate them to get myself interested. Richard Marx
Marriage is like a bank account. You put it in, you take it out, you lose interest. Irwin Corey
When you lose interest in anything, you also lose the memory for it. Johann Wolfgang von Goethe
When you lose interest in a program, your last duty to it is to hand it off to a competent successor. Eric S. Raymond
I like straightforward names for my characters. When I get too symbolic with names or places, I start feeling like the characters and the story are less read, and I lose interest. Tayari Jones