Preventing sabotaging a healthy relationship

I’m in a newish relationship after a 2yr mentally/emotionally abusive one with an alcoholic narcissist. SMH on the amount of grace I gave.

The final straw was the evidence they forgot to delete from their phone, that they had been cheating on me throughout the second half of our relationship.

I’m in a very secure, very honest and calm relationship with a wonderful person today.

And I’m having moments of sabotage where I will believe they’re entertaining other prospects, hiding secrets, etc.

For the record, I’ve been seeing a therapist and have medication.

Could you please offer me a good book, where I feel validated and not crazy; and how to pause to understand and combat the feelings that push me to want to sabotage the relationship?

Thank you in advance.

(I’ve read The Mountain is You. Good book.)

by robinsaremyfavorite