1. I will start off with a cute bit of advice from my children.
They came running into the living room breathless with excitement. "Mama we found a secret!" Prissy almost shouted. "Uh huh!" Little Man agreed. "He hurted his foot, for real and I rubbed it and kissed it better and it made the pain go away! We found the secret that had been hidden from us!" Prissy finished her face filled with amazement. "Uh huh!!" Little man added showing me his socked foot.
So you see a little bit of affection makes almost everything better - just get that persons permission first.
Now to the more serious advice
2. If you are with one person in a relationship of any form and you want to be with someone else - don't be a coward break it off with the first person and move on. If you are the type of person that can not make a commitment DON'T.
(please don't message me I don't gossip about friends I am just saying this is a basic rule in life)
3. Next my BFF who runs a very wonderful Autism blog and can not say this for herself as it would "offend" people. If you have any family members or friends that have people in their lives with special needs, HELP them. Read up on the subject; become aware of what they are going through. Ask what you can do to help.
Please don't tell them that what they are going through, "isn't real", "that you don't believe that's a real diagnosis", or say that because you don't understand it, that you will give them their "space". More importantly do not say this is their fault! They are going through enough without being blamed for everything.
You don't have to become an advocate, you don't need to learn everything about the subject nor do you have to change your whole life, but extending one hand of friendship and just being there for them whether you understand or not makes all the difference in the world.