I am fully aware that this is a public forum, fully viewable by Immigration officials, and I'm afraid my thinly-veiled answer was taken a bit too literally. My intention was to make it clear that if you enter a country on a tourist visa, you are coming to visit. (Just as when you enter on a fiance visa, or a work visa or a wife visa or a student visa...whatever it is, you are asking for something you intend to carry out.) Therefore, if you enter on a tourist visa, be prepared to be expected to tour. Bringing up that you're staying with a boyfriend brings into the scenario a different reason. "Oh? Shouldn't you then be applying to come in for a fiance visa? But if you're coming to see a boyfriend, don't you intend to marry? Why are you here as a tourist, then?"
I was trying to have Krissy avoid that grilling. No, it isn't wrong to stay with a bf. I think NYSOM put it better than I and in more exacting words..."less information is better". But I wanted to add a back-up "I'm here as a tourist and I'm actually planning some fun things, want to hear about them? I'm all excited about this trip!" No mention of bf. Why is that important to bring up?
Sorry if I was so intentionally vague to have seemed misleading. I think a lot of us have similar experiences of coming in on a tourist visa and staying with our bf. (Heck, how do we know we'd even want to spend the rest of our lives together if we spent no time together?) I wouldn't want to go through all that grilling again and I would have come more prepared with a better "I'm touring" response had I known what they'd be asking me. I've been thorugh the grilling...would never want it again.
Again, please understand I am in full agreement with everyone here. But keep a clear head about the basic, very fundamental reason you are asking to come into the country. It's a Tourist Visa. Period. Comply with that and you've sailed through the process. That's all I was trying to say.
Edited to correct a typo...I'm sure there are others!