Thoughts are with you bud.
We went through this a few years ago, the life an soul of the party decided he didn’t want to be around anymore. A big group of mates went to bits that day. A bit of advice for further down the line is to organise some kind of event, maybe close to his birthday. We have a golf day, raise some money for charity. His family are involved and I think over the years it has helped them, as well as us.
And keep posting on here, it will help.