Previous bf was much bigger than my current

Of course my ex is a jerk with a nice dick but have started seeing someone new, for a while actually, and he is the definition of perfect. He’s sweet, respectful, loyal and so much more. We had sex for the first time and it wasn’t terrible, he’s just smaller so I wasn’t fully pleased and I feel terrible for saying that ☹️ he’s the one I want to be with, do you have any tips to help?

Thank you!!