Going to Canada on a one way ticket ... Via LAX

[cattlikewoah]

I am planning to live and work in Canada next year on a working holiday visa. I am worried about trying to get in as my one way ticket flies from Sydney to LAX then another ticket to Toronto that night (cheapest way - saving me $1000)

I'm worried because I've been travelling to the USA a lot lately - 4 entry stamps on my passport this year and once last year and on my last entry which was into Dallas, I was taken into a room for questioning. I'm concerned that they have a lot of information about my travel on their computer (most shocking was that they could see how much I've paid for my airfares!) and im paranoid that they might think I'm trying to stay in the USA despite my documentation for my intentions to live and work in Canada.

Then upon arrival into Canada I will be questioned before being issued my visa. My boyfriend is a Canadian citizen and I have no intentions of staying in Canada past my 2 year whp visa (we will go to Australia). So do I just fail to mention him completely? USA immigration was nosey about him asking if I intend to marry him to which I replied it was none of their concern. But if canadian immigration catches wind I'm dating a Canadian then will I risk being refused entry??

I know I'm paranoid but my past experiences with immigration is less than desirable but today I opened up the newspaper and read about an Aussie being refused entry into London. I can't help but see this as an omen or warning of some sort...

Advice anyone?