Shall I report these men? abit scared

Please read and help as I don't know who to go to. I just need some advice, and if people think it's the right thing to do. I'm 18 and started a new job in a work place; have 3 weeks on it. Just started week 2, Training group is amazing!! Everyone is great however there are 2 guys creeping me out, i have never gave wrong signals btw, right the first guy follows me everywhere,clings to me, sits so close to me like he might Aswell sit on my lap, he keeps saying ' I'd be lost with out you' , he keeps trying to hug me and pull me, Holding his hand out for me to hold his hand, keeps making comments on my body ect, he shouts at me if I'm with other friends, and when I move away, always questioning me on what I'm doing, he's creeping me out. Today I had to sit between 2 of the other guys so he wouldn't sit next to me! He's known me like 5 days ! The other guy is Asian too and isn't as bad , but he keeps asking me to go in his car and making comments and trying to sneakily talk to me, asking if he can take me home .. also today he randomly sent me a link and it was a link of videos of people being murdered and tortured and he said ' I love this sort of stuff' .. I'm uncomfortable at work and I'm scared of them. I don't know if they are too friendly or if I should report it, everyone has told me to report it as they find them especially the first guy creepy!!