Are you sure in mental balance of your partners? You could really test it youself by webcam and Balance-VI+ program. Look mental balance one time and understand that you need to control it everyday, available in Skype!
Try it free! Just download and activate with demo code DEMO_DB
This program is made for measure the level of the balance of different peorle. Its could be used for recruting of employees, creation of a quiet command for the decision of difficult problems, a choice of the counterbalanced partner for family creation and so on. It will take you some minutes to measure it. You will need the PC with installed VI Balance on it and web camera (or videorecord of the person). This program also work with Skype.