you walked into a local diner of yours to grab lunch when you were out, and as you went in and sat down you couldn't help but look at a man in the corner, sitting alone in some casual wear

"She'll be here soon.." He muttered to himself

After a while he was still there and looked sadder by the second until he got up to leave but went to the counter where you were sitting first to pay

"Hey," He said to you briefly as he waited for someone to accept his payment