Hi guys. I'm 22F and my cousin is 24M. This happened last year. My cousin, whi just arrived feom another country, visited us as his graduation gift wothout his parents. (So that means he's the only on here technically from another country).

Here's the thing, whenever we have hang outs, he always sits beside me, follows me around, always looks at, and always messages me, exhibiting stalker behavior. He even overpours alcohol on my cup whenever me and my cousins drink. To the point that when he gets drunk, he touches my knees and to the point up to my thighs. I'm lucky I drank a lot back in my college years so I have a high tolerance alcohol. If not, I could have been a victim to him.

He also gave me a monetary gift (if it matters, its 20 NZD) and a picture of him in his graduation with the chorus of My Love by The Backstreet Boys at the back, which is irrelevant, weird, funny, and scary all at the same time.

I want to tell my parents about this. What should I expect? Thanks in advance.

Edit: My follow up question, when should I tell my parents? I plan on telling them when my cousin comes back from New Zealand (most likely on Dec 2021). The quarantine is going pretty long from where I live and I'm convinced on saying it any time soon. (This week or before October ends.)