You want to be close to and be liked by the people that you meet, as we all do. You feel that intimacy in your life is lacking and that being able to share your thoughts openly with someone receiving them well is important.
Unfortunately you are attempting to speed this process up much more quickly than the average person feels comfortable. Your need for closeness is so great that you are sharing thoughts that make people feel very uncomfortable at that stage of your acquaintance. Your attempts at closeness are actually driving people away from you. You are provoking people and talking about controversial subjects because a negative reaction is better for you than no reaction at all.
This issue with people thinking you are stalking you is only a symptom of a bigger issue, which is your need for connection with someone. Possible remedies for your situation include:
1) Try to look outward in your real world. Practice talking to other people and thinking how you can make them the most comfortable and happy. Volunteer with an organization (it will make you feel good, you will be accomplishing something important and you will meet people).
2) Think less about your feelings and more about ways to build your sense of who you are. If you feel comfortable in your own skin, other people's reactions will matter less and they will also find you interesting. When you have less need to provoke, they will be able to relate to you. (More on building confidence later).
3) Find some strong adults in your life who you can become emotionally attached to. The problem with other teenagers and with online people is that they are either far away or dealing with their own problems. They will not be there for you no matter what. You cannot look to someone for guidance if you do not have a home base. You need the stability of someone who you can look to for support, unconditional love and guidance. Some places to start, (if you can't look to your parents) are connecting with teachers, becoming part of a religious community, joining a youth organization or a sports league, or finding someone in your extended family that can act as a parent figure for you.
Your brain's first priority is taking care of you emotionally to make a strong attachment to someone, preferably someone who can take a strong lead in guiding you. When this is not there, you will be restless and unsettled, and always looking for something that will fill that void. Hence, the kind of attempts that you have made so far to remedy that.
To deal with the emotional pain of the rejection you feel from not having attachments, your brain will shield you from noticing how other people are reacting to you and where you are not wanted so you will keep stepping into more situations where you will be further rejected. After some time, this can worsen and your body physically and emotionally numbs itself to pain. It becomes very difficult to be able to come to tears about something that isn't working in your life. Until your body actually has that release, it will stay stuck in a cycle of doing the same things that are not working. When things aren't working, you will experience frustration that turns into agression. When the emotions are numbed and people become both tearless and fearless, people begin taking unreasonable risks or start cutting themselves just to be able to feel again.
Alternatively, if you have strong attachments in place, they serve as a root system for you so that you can grow. Your brain can move on with the business of maturation. You have room then to think of other people instead of your own needs, to make long term decisions, to persevere in favour of a long term reward and to control your emotions. You will be more sensitive to those around you which help you stay out of the way of those who will be likely to hurt you.
The people on this forum have a wide variety of worldviews. Within the context of my Christian worldview, God is the ultimate attachment figure who will be there even when you are alone in the world. He will love you unconditionally and give you the peace that will allow you to become what you were meant to be. I think this is worth considering.
You obviously do want to connect with people and I think you have something to offer. You are just going about it in a way that will not get you what you ultimately want.
