This older man can’t leave me alone😡

At first, he seem like a cool person and I don’t mind talking to him here or there(at that time) it was always a hi or a bye type of thing.But as time went one I’m starting to see something odd about him..like one time when I was wearing my blue tracksuit…he said “oohhh so cute, your such a cutie” I immediately felt disgusted by those words because it’s from an older guy(around his 60s and I’m in my early 20s) and it’s cringy.So I didn’t responded back to him and just resume back to work.Another one was during break I would sit at a table(by myself and enjoying my meal)and than here he come sitting next to me…if I sit at another table he would sit behind me…side by me..like it’s starting to get really annoying😡like give me my space he does this everyday.Lastly,when we clock out to go home…I had clocked out before him and was walking to the main entrance..I didn’t see him behind me at all or the side or me…but when I had turn to the other corner..and turn my head to the right..He just pop out of nowhere and was walking a long side of me and wanted to start an conversation..I was like “what hell” like where he came from.