
I think their communication is good, they just need to know each other more since everything comes with time (and yes I mean it in a dirty way too (=・ω・=)). Comparing them to some other couples I don't think their communication is bad. :D
Also I feel like this behaviour is important for Sunny. He said something about Young controlling every aspect of his life (like that dressing him from head to toe thing -grrr) and I feel like this was a really long journey for Sunny to be calm like that. I just love how he doesn't cut him off, but is definietly able to say NO and just wants to go to this wedding and finish all unfinished business with Young after that. It's like he's making himself a quest and he's slowly working towards it like an adult. :D
Ah, and yes, let's burn Young in hell! This controll freak... :/

I think Sunny was hoping for the best and got wrapped up in his new relationship with Lee. So Sunny underestimated Young's need to meddle in his life.
If Young stayed true to his word he wouldn't have contacted Sunny out of the blue like that. If Young wasn't abusive and controlling but just an ex things would be over. Of course in that sort of situation there wouldn't be much of a story to read, lol. There has to be some conflict.

Yeah, I feel like Young still feels like Sunny is his possesion. :( The story is more dynamic this way, but I like the characters, I'm slowly getting tired of all the ukes being... well, typical ukes - nice to the point of me vomiting and making more and more misunderstandings. xD That's why I find uke's character to be well balanced. :D
That guy acts like he's a fucking alpha, but in reality he's just an ex. Don't act all high and mighty my dude, remember, you're just a stain.
Also my good lord, please communicate you two. This is pissing me off like i'm their best friend who keeps giving advice.