Am I being dramatic

The other day I went to my friends bday party and I guess my ex was there but I didnt know he would be there. I told my current bf (didnt go to the party) that he was there only bc I felt uncomfortable. So yesterday my bf told me he was bothered by it and felt like since he wasnt there and my ex was, he thought I was gonna go mess around w my ex which I could NEVER do. So w that being said, I felt like he didnt trust me and I got a lil hurt, am I being dramatic?