As a coworker and not a client, I hope he doesn't fall into that toxic mentality with Yuna that he did with Oh Heeju.
As a side-note, love inherently puts your heart in another person's hands. With a big reward like love, there's bound to be a big risk as well. If they mess it up because of their own selfishness, that doesn't mean you have to guard it from everyone else. Learn from your experience, but don't let it define you. Every different person is a different conversation.