Apparently, dating FAIL runs in my family

My lovely grandfather is a widower, who spent nearly 65 years married to my grandmother prior to her passing away in 2008.  After that, he decided to get "back in the saddle" and find himself a new "companion" so that he would have a partner for exciting things like playing bridge and eating dinner at 5:30 pm.  Somehow, after my grandmother passed away, he managed to get back in touch with a lady we will call Ms. L, who was the younger sister of a childhood friend of my grandfather ("younger" is clearly a relative term - the woman is now 85 years old).  She was living in Arizona, he was living in Jersey, and they developed a serious phone relationship over several months.  Fast forward a few more months, and he's heading to Arizona to visit her, and 6 weeks later, he's bought an apartment in her old people farm out there and packing up the Jersey house to head west.

After about 6 months of being out there, things start getting rocky.  Although my grandfather and Ms. L have gone on vacation together (things like a fabulous cruise through the Panama Canal, and another one scheduled thru Alaska in a month or so), she starts dropping hints like "I can't have dinner with you every night because I had a life here before you moved out here and if I spend all of my time with you I'll lose my girlfriends."  (heh - "girlfriends" - they're all in their 80s).  So, my grandfather plays by her rules, and limits his time with Ms. L to her specified amount.  And then today - on my grandmother's birthday no less - Ms. L calls him up (probably at 8 am, a clearly acceptable social time in their world) to tell him that she no longer wants to be a couple.  As in, she's just not that into him anymore.  She's 85, he's 89.  So basically my entire family is a complete dating FAIL these days.  But seriously, WTF?  What else does this woman have going on - women outlive men significantly - it's not like she's got a whole selection for the choosing?!