Should I or no?

Okay, My best friend shawn is supposed to come and get me, I’m almost 14. and hes 19. we’re not going to do anything we shouldn’t just chill. but the problem is. I dont even know this person in real life. but I have been talking to him on the computer for a lil while. I saw pictures and I have seen him on cam. so I know who it is. and he isn’t lien. but I dont know if a 14 year old should be hangin out wit him. Usally. my mom talks to them and tells them dont do anything. and they dont.. but I don’t know should I or no??