I really hate the posting system here, that's all I'm going to say.
I had a response. I posted it. It didn't post.
As I'm tired of drawing another response, I'll just say that your question is logical, but not viable towards my point.
I'll say that I'm rather irritated with the response I was initially given due to its contentious nature (you seemed to be moving to either contradict me or give an unneeded (and in my eyes, condescending) response which wasn't necessary to highlight as I had done just that, highlighting the issue) and its redundancy (you weren't saying anything I disagreed with, but you framed the response in a manner that I found provocative and, as I said, condescending)
Back to the question: It's not really pertinent here. I made no statement in contradiction to it, but I state the flaw of the question in the context of the dramatic show (which I stated was because of poor writing on the part of the writers who are more interested in controversy than storytelling). As well, the question is only invalid when stacked with immortal characters who love one another and cannot die. It's unfalsifiable by definition. Given time, every character in the series will meet that point. As well, we are given remarkably few explicit declarations of love. Thus, it's kind of hard to actual state by what number of characters actually even use the L word.
In the interest of discussion, I'll simply state there's no argument. I'm in agreement. That you posit the question to me is in lack of recognition that I have no argument.
If you are asking thus far in the series however (which would make a more pertinent question), then my answer is Sam and Gilly, and that's being liberal with how far you're willing to accept the lack of death between those two compared to the large amount of death with the other characters they associate with.
Thus, the better question (or statement, I suppose, and the one I think you meant to use) would be "everybody in the series who loves someone dies or has their loved one die, often in front of them." Which is still ambiguous in terms of love, as everyone loves someone who has died (nor are you restricted from loving one person), except for perhaps Ramsay (who likely only loves himself).
If we're to take that for a romantic pairing, then my offer of Sam and Gilly stands. It may not be explicit, but it's pretty obvious they love each other. And they're both still alive and well as far as the show goes. Now, you could argue that Sam has lost Jon (and what brothers that he was close to like Pyp, Grenn, and Maester Aemon), and Gilly her sisters at Craster's Keep (those that weren't rescued by Jon Snow last season). However, that serves to undermine the intended point I think you were trying to make.