Also wow Dr Heo and Lala's relationship just got way weirder I'm surprised he doesn't fight against her behavior more
Tbf, Dr. Heo feels like... a pushover? I don't think he wants to deal with Lala, but he doesn't even put a stop or a distance between them (he tried when they were separating their ways a couple of times, but Lala is
obsessive persistent in her (and the twins') actions). At this point, he might be just following with the flow life threw things right off at him (especially since Hana re-entered his life), because he doesn't have that much of a choice for survival.
I mean, I feel like he was a little different when he was homeless. But I bet it was because he freed himself from his identity as Heo Yoon. Other kind of needs and all that (also, not being pushed for his works and other duties) It could be that it was easy to adapt how he was when he was creating a new identity, maybe?