Should I tell my boyfriend a guy sent me a dick pic?

So out of the blue this guy I've been avoiding forever sends me pic like that, me and my boyfriend are really serious and I tell him anything that happens, but should I bring this one up to him or no? I want to handle it on my own but my best friend wants me to tell him. I don't know what's the best thing to do.
Should I tell my boyfriend a guy sent me a dick pic?
Post Opinion