Yeah - Korean culture is not great, which is why it took Seb a while to come out to his dad only to be basically told as to "why did you wait so long? Here, let me explain gay sex to you." Seb's mom is dead and used to be a dancer.
Yeah, the serious ex wouldn't have worked. Does Dani do any type of fitness/yoga/running? Maybe they ran into each other. The other thing - is if Dani frequents coffee shops, they could have bumped into each other there. And gotten talking? The snarky would be encouraged.