My bf jerking off

So me and my bf have been together for five months and he has a struggling addiction to porn and when he got with me I told him how I felt about it and how I feel like that is cheating and he understood so he stopped then we had phone sex where he would record us doing stuff. We had a break almost two weeks ago and he watched porn to jerk off but now every time he wants to jerk off I feel like he secretly watches it and lies to me about it I’m a heavy overthinker and I came from a lot of broken relationships and this relationship is my first healthy relationship but what should I do am I being dramatic or no ??