Happened by accident last weekend. I was not "letting" anything, she slept with a guy while she was on a business trip and she said he was pounding her so hard that his condom broke before he came.
I suspected, since she took condoms and lube with her. She didn't remember telling me. As I fucked her, I asked about her tryst. Also pissed to hear her say the condom broke when he shot his load, because he was pounding her so hard. .