Dude, no need for that just try and remember if they have done anything like that in the past and if not just try and place your trust in that person ONLY if you know 100% that they will never hurt you, I have one true friend in life because I placed my trust in him, I know even with my SA he will never betray or hurt me.
Alot of people have screwed me up in the past and I know they did that because of their insecurities, not mine. "Oh look it's the kid with SA, now that I know he has SA or whatever they call it, lets laugh at him because I feel big in a crowd". See the problem is even with some friends or people they judge you on something they don't understand or don't want to understand. Not everyone is a major ahole, just find that one person or two that really accept you for who you are and will always be there for you. There is a person for everyone in life if you look and think about it hard enough.