We all want to be with someone. There's worse things than being lonely.

just ask people what they er talking about. most people don't mind, in fact, it's more conversation!

When was the car crash? You could be suffering from PTSD...

He could be, but this sort of problem is typical of head injuries---I'm thinking of one friend of the family who got in an accident on his bicycle, and he was just never the same afterward...

We all love you. But give yourself time to heal start slow and try new hobbies on your own. If you spend a lot of time alone spend it doing things that make you happy. And at the same time learn a new skI'll. When you love yourself first then others will come and you can relate on some level. People probaby have come and gone in small ways but you cannot see them because you are in this frenzy to find the right friends. Instead focus on yourself and you would be amazed at the wonderful people that are waiting to come your way.
I might be one :) hang in there xo

Have you considered support groups for others with head injuries too? It's hard when your brain isn't the way it used to be. I have ptsd, and memory issues which got worse after a concussion. It's hard.... But the brain has an amazing ability to heal, and adapt. Have you talked to a neurologist about things you can do to help with cognition and memory? The brain needs exercise too, and stroke survivors can regain and improve on certain lost functions through different techniques. An area known as neuroplasticity. There are often studies at ubc that look for volunteers and show improvement after being in the study too. I saw this with stroke survivors I worked with. Counseling could be highly beneficial too.

I think you need to get yourself a prostitute just to get some physical intimacy. People will tell you to go out there and make friends but its really hard.

You could also maybe get a massage for some physical touching.

You won't be alone forever. Everyone goes through this phase at one time or another. What you are is selective of your consorts. And, don't assume the reason you can't comprehend someone's speech is because of your head injury. Some people genuinely babble or start a dialogues in mid-story and make no sense. When I can't understand what people say, it's because THEY are half-wits, in which case I just nod and grin.

I don't mean to oversimplify but will make a serious suggestion for pets. Dogs are great for getting out the house, cats are excellent companions for the average introvert. Both are angels in combatting loneliness - they really will be your friend forever.

I have had a minor head injury and have been going through something very similar to what you are describing these past few years. It is extremely frustrating to see these changes happen in oneself , but such is life. I used to love being around people and could follow the fine details of everything around me, but now it is very frustrating much like you described.

The frustration and resulting isolation can be just as crippling, and a vicious cycle. It's hard to have to see one's self in a new way, but one must accept that this is happening to you before you can work to adapt to the situation.

Just know you are not dumb, and your brain is as malliable one way as it is to the other. I find reading for sustained periods, 2-3 hours at a time, to be very helpful. It is frustrating, and will continue to be, but a book is good company and this will get easier over time.

Ask your about registering with a disability. No shame in that. Explain your situation. Say you have difficulty with computational tasks, concentration, and short term memory.

If you can find a way to be happy while you are alone again, you will find plenty of men and/or women who will accept you as you have accept not only yourself, but them. This is my experience, and I'm still working on it. Hopefully you can find something that helps you too.