I have some experience in this (18 or so suicide attempts between the age of 13 and 26), so I'll reiterate the whole thing of "no, no, don't do it". It's annoying to be told that when you're 16 and no one else understands what you are going through, but people are actually right to say it .
I'm not going to talk about my own attempts, since they're the last thing you want to hear about , but I am extremely curious why this girl has blocked you. Why would she go to such extreme measures?
You see, I also have experience of stalking (2 very nice lads who fell in love with me and refused to take 'no' for an answer, plus a friend who's been obsessed with the same woman for the past 15 years), and I am now wondering if your intense feelings scared her.
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Your Aspie score: 146 of 200
Your neurotypical (non-autistic) score: 68 of 200
You are very likely an Aspie