You say you do it until they are aggravated - that is a form of hurting them, not just surprising them or getting their attention. You get their attention by saying "hello". You can surprise them with gifts or other things they enjoy. Aggravating them so that you can feel good is not "playful" teasing. I myself cannot get teasing right - what I think is playful is what others find annoying, so I have try to remember not to do it. I cannot get it "right" so that there's mutual fun, just as I can't really tell jokes right to make people laugh, and I can't use sarcasm just to be witty/funny, instead I sound very angry or something. It is possible also that you are subconsciously working out inner aggression through such "teasing". I think that's something I would do a lot as a child, and possibly might do sometimes to my husband - which I need to stop.If I'm attracted to someone or like them a lot as a person, I'll annoy them. It's just, for some reason, I gain a sense of triumph, knowing that I can affect the mood of those I like romantically. I would bother them until they're aggravated. It's a delightful spectacle. The madder they are at me, the more I like it. Is anyone else like that?
Update: I'm also only 15, keep in mind. I do this to my peers at school, tease them and such, just like all kids do. I don't mean hurt them, just surprise them and such, to get their attention. Plus, I'm not diagnosed with Aspergers, just wanted to know if the tendency for playful teasing this is common among Aspies.