Torah
Theres no beauty in a spouse becoming further from Hashem and then being stuck in a situation where you must tolerate this. I think it’s actually not only a betrayal of Hashem but a betrayal of your spouse because your spouse married someone who was looking to grow spiritually and here you went and did the reverse and are causing a rift in the marriage. I also think that if one member wants to be frummer and it won’t affect the marriage as a whole the other spouse has no say in the matter on the other hand if it will be a change that will affect the family as a unit and will affect your spouse you must discuss it and get his or her approval first.