No affection

So I won't kiss or be intimate with my boyfriend until we are 15. Strict rules we only cuddle and hug and our relationship is PERFECTLY fine. I see all of my friends kissing and loving on their SO but I'm just not like that. Our relationship is very serious and we've been dating almost ten months. Our friends tease us all the time about not really being affectionate. We're not like that for a reason. It took me years to recover from the pain and flashbacks, but I've managed to let the truth out. I was raped by my cousin when I was only in fourth grade. It's hard to admit this to him and my closer friends.