well 5000 is the max with a lot of luck going on. check out namebio.com, and filter .re extension, you will see a few sales for this .re. I doubt anyone else is going to think of this and try register. You need to contact ppl with your idea to develop it, or put a simple pre-made dating site on it and try selling it that way. It is a domain you need to actively try selling.
It could also just be a personal blog of someone that likes writing about love. Seek out ppl like that with existing sites on bad domains.
Same with a real estate 'lover' blogger, look for these kind of sites and pitch it to them.