Shrike, thankfully, has not had any first-hand experience with the kinds of feelings. However, that description does remind him of a certain conversation he'd had with someone over the network just a few days prior.

"Someone a few days ago was talking about someone being lazy from being sad, is it like that?"

He has no idea that he'd been talking to a Clefairy talking about her trainer (and trainer's BFF), but he can still put two and two together.