[Wneighbor]

Definitely something to explore.

Also, how about

Yes friend, this is really interesting getting to know newguy in email etc. but, I'm a little hesitant to try developing a relationship with someone over a distance. I mean, if I knew he was a great guy like your brother............

[HairOfTheDog]

Too subtle, and sublety has not yet worked.... she isn't interesting in just 'some guy like the brother' she is interested in the brother.

Friendsbrother makes her twittery and newguy hasn't yet, but might later. And I don't think the distance is the difference. ;~D She is just looking both ways before she crosses.