>>89456387> general awkwardness of their relationshipThis is a common symptom of long-distant relationships in general. I met my wife online originally and we could chat online for years like we were best friends.
But when you meet in person, you're essentially meeting a stranger. It can take days or weeks to connect the person in front of you with the faceless username you've been associating with for so long.
Taeshi and Suitcase undoubtedly went through the same thing and could very well be mirroring their own experience with Mike and Sandy.
Sandy and Mike separated when they were in the 3rd grade, and she comes back years as a career supermodel with only less than a day total ever seeing each other in person. Awkwardness is understandable.
I'll give you credit about the other points, though. They don't really have enough in common to keep a meaningful relationship, other than she likes to talk and Mike is a good listener.