Hi Geraldine,I'm sorry to hear how you miss your son. But honetly leave him to his peer group and continue to be the nice, funny, loyal and of course embarassing parents that you have probably always been and he will be back.......but not for a while.
Teenagers live in their own orbit and anybody who isn't in it is totally disregarded, but it doesn't mean he loves you less , its just that he doesn't even think of you. And yes that hurts like hell. I have 3 children and my first two are sons and they behaved just like this from 15 to 20-22 . They laughed at me not with me, they thought I knew nothing and barely tolerated my presence, and this from sons who used to seek me out and boast about me to their friends.
There were lots of rows and boundry pushing and so much door banging I thought the house would fall down.But I learned to choose my battles and not rise to much of the bait and as the years went on I most definately got my boys back. They are 27&28 now and their sister is 23 and a nicer group of people would be hard to find, and at last we laugh about their various teenage angst. I hope this helps and wish you all the best.