This is my story.

I've never told this story to anyone before, not even my boyfriend of 2 years or my best friend for 9 years. I've never felt safe enough, and I've always felt that it was just too vulgar/they wouldn't care to listen. But, this is my story.
I don't know exactly how old I was when any of these things happened, unfortunately, but it was never past the age of 11.
One incident was a time when I was at my grandparents with my cousin and my brother. It turned into a huge fight among us, so my cousin, my brother and I locked ourselves in the upstairs bedroom until my mom could pick us up the next morning. I was at that age where I was always at it with my brother, so I decided to sleep in the bed with my cousin, as there were only two beds. When I was trying to sleep, I felt him press up against me.. And i felt his dick rubbing against my ass, and he was whispering my name in my ear, I guess to get me to move or do something. I just pretended to be asleep.. Eventually, he stopped, and I got up to go to the bathroom. When I got back, I got in bed with my brother instead, thankfully. I stayed there the rest of the night, but my cousin was calling out my name quietly, to get me to come back I'm sure, but I didn't.
My cousin has done things before like that. When I was very little he would take me in the closet and kiss me. I didn't know that there was anything wrong with it, at the time. But he's 5 years older than me and he knew what he was doing.. Two things that I also remember are #1 him holding me in the pool and touching me through my bikini with his boner, and #2 him holding me in his lap and telling me goodnight and, again, touching me with his boner..
The other incident is a more hard one to deal with for me. It happened before anything with my cousin ever did. I was in my brothers bedroom with him, playing truth or dare... And, he pulled out his penis from his underwear. I was very scared and confused.. I remember he said "do you know what that is? It's my wiener." And then he told me to suck on it, or lick it, or something along those lines... I was terrified.. Thank God I never had to, because right at that time my mom knocked on the door for dinner. I still think about this every day... 
I've since tried to forget it, but I can't. The only excuse I can think to tell myself is that they didn't know what they were doing, or that they've changed, or that they've forgotten that they did it, even. I don't know the truth.. 
I've told my boyfriend about what happened with my cousin, but I've never told him any details or said that it's happened a few times. But I've never told anyone what happened with my brother, and I have no desire to... But it feels good for someone to know. Even though I'm on anonymous, and none of you would know me anyway, it just feels good to let SOMEONE know. So that I'm not so alone. Thank you.