My boyfriend does not know how to come down on me.

Vivian
My boyfriend was my first and I was his first, we have been knowing each other six years and been dating two years. Whenever we have sex everything is going good, everything is fine but whenever he goes down on me I don't really like it lol. I feel like he does not know what to do, so most of the times I have to fake that I love it. What should he do ? What should we do ? I just wish he knew what to do to make me want to keep going with the moment lol. Help !!!!!