Using 188.8.131.52 using Chrome as the browser (open the developer console):
1). Create two managed objects: test1 and test2
2). In test1 add a property named testproperty of type Relationship
3). Edit the property and select the 'Related Resource' as test2.
4). Click the Two-way Relationship option and then choose 'Has one'
5). Enter a value in the 'Reverse property name' field that does not exist (there are no properties on the test2 object).
6). Click Save and note the following in the Chrome console: