1. Also work on your "Worth of Self". Find healthy ways to bring back your own worth, your self love as well.
2. Money is money, why put your sanity at risk due to "money".
All long-term relationships, will trigger old life wounds. You each will trigger each other. The trigger will be similar reminder of unresolved past issues. That saying " are you upset for the reason that you think you are".
Many will cheat when their mate stir old hurts, they confuse the current situation, they will blame the "other" partner, then use this as a reason to leave or cheat.
Please don't go into another long-term, till you heal you. Else you carry this with you. That's why second and third marriages fail sooner.
Be your own best friend.
Be your internal self love. (No special person can fill this, but you.)
Your own happiness is your life job for you.