Sharing Our Innermost Thoughts

I have a question if someone just leave u block suddenly from everywhere and u try to contact him u found out that there phone no. Is no longer in service even his cousin doesn’t know where the hell are they actually no one … one of there friends and it’s almost an year u searching for that person. And u have tried every possible way to contact them but u couldn’t succeed u don’t even get any hint… it felt like on one knows that person anyone life he/she was only only in there past and don’t know where he/she vanished lol😂…
So would you give up looking for them or just keep having some of not so real hope?