Why didn't my boyfriend acknowledge my gift?

My boyfriend was having a really bad day, so as a surprise I went to a local sandwich place and picked up his very favorite sandwich. I biked to his house and left it on his doorstep with a simple little note, pretty much just saying he was a good guy and I was happy I knew him. Nothing too serious or over-the-top, right?

I text him and tell him to go to his front door; he tells me he isn't home yet, but will be in 30. We're texting about the surprise I left him as he's on his way home. Later, he gets online. I ask if he's home, and he just says "Yep." We talk for a while more; he never acknowledges the surprise sandwich at his doorstep.

There's no way he couldn't have gotten it. It was right on his doorstep, and he was expecting it, so if it wasn't there, wouldn't he have told me?

I'm really pretty bummed out because I thought the gesture would put a smile on his face. Even if he was feeling grumpy or not in the mood for a sandwich couldn't he have acknowledged it or given me a quick "Thanks"?

A friend of mine suggested that maybe he felt like it was too much too soon (we've been dating for one month) and that maybe it was a turn-off because it made me seem "too available." Someone tell me what's going through my boyfriend's head please?
Why didn't my boyfriend acknowledge my gift?
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