Watching porn while having sex?

Does anyone here watch porn with their s/o while having sex? If so how has it changed your sex life? Right now me and my bf are pretty vanilla and that scares me because we have been together for 4 years we’re barely having sex now so I’m trying anything to spark it up again. Also I’m hoping the porn will give him some ideas on positions etc I would like him to be more dominant in the bedroom.