If you're staying in a relationship that doesn't fulfill you, challenge you or resonate with you because you feel obligated to a deal or a contract you made with another human being, you are depriving both of you of opportunities for happiness and growth.
For we are God’s masterpiece. He has created us anew in Christ Jesus, so we can do the good things he planned for us long ago. Eph "For we are God's handiwork, created in Christ Jesus to do good works, which God prepared in advance for us to do." Eph, NIV