Is He Obsessed with me, in a crazy way?

So I met this guy about 3 months ago, in the beginning I thought that he was to good to be true, but now I find that he is kind of weird, the reason I say this is because he, constantly steers at me, when I'm not looking, and when I do look at him he has this weird smile on his face, he reads into every little thing I say, like if I ask him a question, he pauses and then asks me if I don't like what I am asking him about, the other day he appeared on my street and expected me to go out and see him, unannounced, I find that stalker-ish, he's already telling me he loves me, and he wants to spend the rest of his life with me, It's kind of spooky! He even tells me that he talks about me to his co-workers every day, he photoshops my photos and has my name as his pword, what do you guy's think? ...Don't get me wrong he's nice and great guy, but he's just a little to overwhelming, I don't want him to go crazy on me, If things don't work out, I'm confused, do you think it's obsession, or am I reading into it too much.