Meetings, partings, and other junk

I've decided that people are just strange. Especially, people who happen to be male. About four weeks ago I was walking back from Hastings (I had bought several manga and novels) and this guy decided to talk to me for about three o four blocks. Then he would not leave me alone until I gave him my phone number. So I ended up giving it to him and hoped he would leave me alone. But no he called me twice that day. A few days later he asked if I had a boyfriend and I basically told him I didn't want a boyfriend. Luckily he hasn't called me since. But why the hell would you ask someone you've just met to go out with you? Maybe I'm just old fashioned but I think that's odd and creepy.