these things happen

these things happen

It is common for unfortunate things to happen or for people to make mistakes, so there's no use worrying about it. A: "I'm so sorry to hear that you and Amy broke up." B: "It's okay. It hurts, but these things happen." A: "I feel so awful about breaking your window!" B: "Don't worry, these things happen."
See also: happen, these, thing

ˌthese things ˈhappen

used to tell somebody not to worry about something they have done: ‘Sorry — I’ve spilt some wine.’ ‘Never mind, these things happen.’
See also: happen, these, thing
References in classic literature ?
But it's only what I've seen over and over again--people seem to forget that these things happen, and then they do happen, and they're surprised.
Sometimes these things happen on a personal level, and they happen in such a blur, while your consciousness is in a dense mass of disorganized emotions and thoughts.
Rapper-producer G-Eazy brings his These Things Happen tour to the McDonald Theatre, 1010 Willamette St.
He added: "I was supposed to be getting the England job, then I didn't get it but these things happen.