@tinywhinywitch, the person who needs to pay attention to that letter you wrote the most is YOU. You are now 25 years old and in a relationship where you are unhappy. You spent time and wrote down "why" you are unhappy and you even mentioned that you are so unhappy that you have thought of self harming. The person who needs to read that letter the most is "you". It reflects what is missing for you in this relationship and you do not have unreasonable needs.

What is in your way the most is yourself right now. You are NOT getting your needs met, you are clearly unhappy and yet you continue to stay with someone who is not satisfying your needs. When someone doesn't want to sit and talk and listen to your needs or challenges, it means YOUR needs are simply NOT IMPORTANT to them. No letter is going to change that, the person who needs to listen to that letter the most is in fact the writer of the letter.

There are several different reasons someone is not sexual or intimate. Sometimes it's depression, low self esteem issues, or the medication someone is taking for depression, it can be due to someone's ongoing addiction to a drug like alcohol or marijuana that affects that area of their brain and body. As I mentioned, could be that he is gay and doesn't know it, or he is Asexual or has Avoidant personality issues. He may have anxiety issues when it comes to intimacy so he avoids it. A letter won't change any of that.

Also, why are you so down on yourself with the name you picked for your PC name? Your feelings are important, they are not tiny, or whiny or witchy.

What other things do you have in your life? Do you have your own passions, hobbies, career?