Hindipridemn, I hope that what I'm going to say doesn't offend you (many people have issues with the nature of my suggestion which they take as an insult) because after the amount of courage and risk that you've taken to post so openly and honestly about yourself, I really do respect you.
In all honesty, I think that the best way for you to deal with your predicament would be for you to see a therapist. I think that your reluctance to kiss your fiance aren't the real problem, but merely indicate as you have already stated, your relationship with your parents have led to trust issues and being abused by a group of teenage boys makes things worse.
The fact of the matter is that even if you were able to have a kiss-less marriage, you and your bride would still have major problems. Your trust issues would certainly prevent you from opening up to her completely. You wouldn't be able to love her in all entirety, and much as you would try to disguise it, it would still be blatantly obvious to her.
I think that it's wonderful that even though it's an arranged marriage, you believe that your fiance is "the one". It would be a terrible tragedy for either your marriage to fail or for both of you to be trapped in an unhappy and unfulfilling marriage.
I have no doubt that if you deal with your trust issues and resolve them, you will be able to open yourself up to her. Perhaps you will want to kiss her and perhaps your autism will prevent you from desiring such contact. The fact of the matter is, if your future bride is allowed into the deep recesses of your heart and your life, I am certain that you will both be able to find creative and meaningful ways to express your love and intimacy.
Thing is though, you may find ways to be able to kiss her, however if you still suffer from being unable to trust her, you'll most probably find yourselves being miserable and perhaps even resentful towards each other.
All of the best, both now and for the future!