What matters is that there is love. One partner does not need to believe or practice in order for the other partner to be successful. That is a matter of individual will. If your partner does not want to practice, yet loves you, then that is all you need to be successful.

Practicing is definitely difficult under such circumstances, since one must mantralize or practice in silence or without indicating that one is practicing. However, there have been cases of individuals reaching mastery even when their partners were against Gnosis. In the case of the Master Gargha Kuichines, his wife was adamantly against his discipline. However, he worked with her and attained great realizations, whereby his wife perceived the changes in him and thereafter entered into Gnostic studies.