need advice!

my boyfriend and i are a fairly new couple! im 19 and he is 24. his friends at work give him crap and make fun of him all the time about me being so young where he is to the point where he doesnt want me to meet them cause he doesnt want to get made fun of.. but it bums me out because i never get to go out with him or do anything with him. any advice on what we should do?