To check if your terms have been signed by your bride you can click in to the relevant Bride Card, select the T&Cs tab and view if the signature has been added (or name typed).

This example shows the terms have not been signed:

This shows the terms have been signed:

You can also check this from your Dashboard's Pipeline view, and see in the 'Quotes Accepted' column the 'Terms not Signed' label is shown: