I’m really worrying about my son lately. He had a group of mates at sixth form but they have other friends they hang out with he doesn’t know, so doesn’t get invited out with them much, does see other mates sometimes. He does play football, works part time, enjoys the gym etc. I just worry he’s lonely or left out? Or should I just let him be and stop worrying. He’s very close to his dad which is good and they do lots together and brother in law too. Help!!!