Advice !!

Jahdai
My boyfriend wants me to use a dildo while he watches. I know this is probably pretty normal and no big issues in other relationships but I feel like that's something personal and I would just feel totally uncomfortable knowing he's just watching me. We have been together 5years and we have been living together for about 4 years now so we are pretty comfortable around each other but with this I just feel like It's totally out of my comfort zone. Any advice ? Have you done it? How was the first time?