Am I over thinking this situation or should I report this guy?

So a new a guy from work started a few days ago and he’s moved to the uk recently from Africa. He seemed nice at work but lately I’m starting to feel uncomfortable as he asked me to give me numbers for rooms in the city centre and seems very eager to wait for me and walk home with me by this time it’s pitch black outside. Yesterday I actually waited in the canteen so he wouldn’t know where I was after work. The next day apparently he was running and asking other colleagues where I was. He seems much older than me but there is other guys at work he talk with

Am I over thinking this situation or should I report this guy?
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