Uncomfortable

So, let's just throw this scenario out there. Lets say you do something to make a girl pretty uncomfortable, and that possibly it involves things like spending the better part of a semester following her around, staring at her while she tries to do homework, trying to grab/hug/squeeze her when she's clearly saying "no" and moving you off of her, and for some godforsaken reason even grabbing her chest after she's been trying to move your arms OFF of her and your hand "slips" by mistake.

Let's say she finally gets fed up with it and tells you not to talk to her anymore?

That also includes not sneaking up on her in public and trying to make physical contact again. That's just creepy. Moreover, it shows that you don't actually have a whole lot of self awareness, or awareness of other people. (Most people also tend to understand that "Hey, staring is really annoying and makes people feel really self conscious", for example.)

Just because you seem to have some internal hangup that says that whatever YOU want and are feeling is automatically what SHE wants and is feeling, and you can't possibly imagine a world in which you actually do make her uncomfortable, if she finally does TELL you that it's the case, you should seriously believe it and leave her alone. Trust me. If someone says "get out of my life" the ball is then in THEIR court to make contact again. It's hard to accept, sure, and most people have a hard time doing that but trust me when I say it makes it much worse to keep persisting.

I wish I could just undo all of last semester. I mean that. I wish I wouldn't have been so naive and let myself get vulnerable enough to keep putting up with behavior that would have ordinarily made any girl put her foot down, hard (possibly on some testicles), and never look back. Be that as it may, it didn't take too long for me to get around to putting my own foot down, and by now it's been there for months. And, guess what - I'm not looking back. Towards either of you. I'm sorry that my IMs, texts, and emails weren't enough for you to really internalize what I'm saying, but I'm serious. Enough is enough.