Panic setting in...CHECK! ✔

My boyfriend of 1 1/2 years continues to have dreams of my cheating on him or someone taking me away from him. I asked him if he's having doubts or thinks that I would and his answer was/seemed very unsure. There is no intention to cheat on him, I grew up in a family where my father has cheated on my mother numerous times, it is unacceptable in my book. There is no interest in another man other than him, I love him with every fiber of my being...more than all the beats my heart has ever taken.

Advice?