Advice – I want to try anal, but cannot relax. [NSFW]

My fiance has always loved my ass. We’ve been trying to have more anal sex, but I am having a lot of difficulty relaxing through all the stimulation. What can I do to try and ease the process?
My fiance has always loved my ass. We’ve been trying to have more anal sex, but I am having a lot of difficulty relaxing through all the stimulation. What can I do to try and ease the process?