She did seem interested,
from his point of view.

 Maybe she's sick of those artist types.  Sometimes they call the next day, sometimes they do it twice or even three times, but most don't.  He looks like the type who will call.  And call again. And maybe he won't be as boring as he looks.  No, he probably will be, but he'll be someone to write back home about so they know she's not as lonely as they think she is.