I’ll keep it short😂

My ex boyfriend was abusive to me. Controlling, cheated, physically hurt me, etc. My new boyfriend is so loving and consistent, and so deserving of my kindness. I’m having such a difficult time being nice now, and it’s unintentional. If he says something that frustrates me I escalate it to 100 immediately instead of taking a deep breath and asking what he means, or just responding nicely. Anyone else been through this or have suggestions? I want him to love me and I know I will push him away if I don’t stop.