t is normal for American to just get one night stand or friend with benefit. if you are not like that, just tell him up front.
If he really care about you, he will change himself, but if he expect something more, he won't be with you long.
There are a lot of thai girls out there who are ready to spread their legs to welcome him. just think about it.
If you are lucky, he'll take you serious. But if he just wants to have fun, don't take it serious, just walk away.
wish you luck.
to answer your question, just tell him to F off!! Keep your wee wee down in your F..ing pants, and have some respect.
If you are horny, just go F yourself with your F..ing hands. You want to have an Asian girlfriend so learn some culture and be more respect. A $ $ h01e