According to Osho, being tired of your wife is the mind’s hunger for the new; changing partners only repeats the cycle. See the three layers: tired of a person, tired of the gender, and finally tired of the restless mind itself. Turn this fatigue inward: watch the mind, drop its craving through meditation and awareness. Inner transformation—not swapping relationships—ends the dissatisfaction.
Your boredom comes from a restless mind, not your wife; notice it calmly and quiet it through awareness and meditation.