immediately want to grab the nearest person by the head and tell them how much the characters loved each other and stuff regardless of whether they have any idea what you are talking about...they loved each other so much dammit

I definitely wouldn't do that to a stranger... buuuuut I do head straight to my mum if she's around for that type of thing. Generally I tell her to watch it a lot of the time as she is a drama addict herself so she will benefit from it. (In fact, I think she's more addicted than me at the minute...let's just say that I created a monster.) If not my mum, then it's a friend or another family member who will either just listen to me or in some cases, watch it again with me, just to entertain me. The people I know, including my family, are pretty flexible with their tastes so they generally seem not too bothered listening to my ranting about a drama.
I rewatch most of my dramas my mum too lol it gives me a reason to rewatch the drama and see anybits i missed :)
Both of you are lucky I have no one in my life to share my obsession with. My only recourse is coming here :)
Lastest romantic comedy i enjoyet to this extent was Marriage, Not Dating :(
In a GREAT romantic KDrama I will tell everyone at the end of each episode how much I'm enjoying it and how great the scenes are. . .  At the end of the drama, mostly I just sit there and stare at the wall and wonder if I'm ever going to find another drama as great/wonderful/sweet/romantic (on and on) as that drama.   If it's really good I will be unable to watch any other dramas for 2 or 3 days as I mourn the ending of THAT one.