Best of luck to you!
I know that you can add another email address to your account so that you both will be receiving the same messages. Click on your name at the upper right hand corner of the screen. A drop down menu will appear with a tab "Profile". Click on this to see an edit tab for your profile. Here you can add another email address.
You can contact a Trulia moderator to discuss what else you can do to merge your accounts by calling 888-466-3501 from 7:00am-4:00pm M-F PST.
Prudential Connecticut Realty