A lot of time goes in to raising kids. It can definitely leave a gap when they grow up. Have you found a new purpose and new connections to replace the time dedicated to him?What do you do when you just feel so lonely you actually physically ache? My son is always out ( and he should be , he’s young) and sometimes you just don’t have work or anything social on. You ask a few people to come out but everyone has made plans. I guess I’ll get through somehow.