net love - does it last

Has anyone ever heard of a net love.  My not now so DH is leaving me
for a woman called Kim from Penn.US.  Shes leaving US and moving here
to Ireland on 17th Dec.  Do I ride it out or move on.  I'm in the
immediate aftermath ie day 2 so its very raw, i'm also not at my most
lucid.  Apologies in advance.  Shes my age.  Further complicated by
the fact he and I work together in a business we founded.  I'm 38
scared rattling around in my house talking to the walls. I don't
expect replies I know you'll be supportive. People don't respect
marriage anymore.
Emer