My boyfriend and I are about 10 1/2 years apart.  I'm 20 and he's 31.  I never notice the age difference and I hang with his friends and his friends gfs all the time and don't notice any age difference between me and any either.  I made a new friend my age idk if I should tell her about the age difference?  Or just leave it alone?? Because I know some people would be a little like "whaaaat???".  Advice please???