Plenty of other things have happened to him - and really, if he thought about it rationally for a single second, which he hasn't, Dhanneth very much took him by surprise, no matter how much Jedao blames himself for his suicide. But it feels true, at the moment. Because -

"He loved me back," Jedao croaks out, on an awful, wretched sob. "I know he did, I know it wasn't a lie this time. But I still wasn't enough."