Sun Jul 25, 2010 1:47 pm
I don't think you'll have any problems. However, I wouldn't mention the dating part - just say you are staying with a family friend.
I think the main concern is that you can't show an intent to immigrate to the USA. Of course, being a college student, nobody would be surprised if you were dating an American but why offer them more info than is necessary? If they ever did find out that you were dating an American, they might ask you something like "Are you going to marry them" and if you say anything positive - boom - you look like you have an intent to immigrate. As long as you have ties to Canada, you should be fine. I assume you still have family there and if CBP ever asks, tell them you intend to move back to Canada when you are done with school.
In my experiences with CBP, the less info you provide, the better. I'm not suggesting that yoy lie but don't volunteer up a bunch of info either. Just answer their questions and move on.