<human>: Summarize the given text in a few sentences.

I have always been a lurker on reddit, so I'm sorry if I'm posting in the wrong place, but anyway, I really need advice! 

When I was younger I always slept at my best friends house, and a couple of times I woke up to find her dad was touching me inappropriately. I never acknowledged him, just rolled onto my stomach and tried to get back to sleep. 

I never told anyone, and I think I was just so ashamed and I was afraid I might ruin my best friend's life. I never even told my parents, because I know they would have gone to the dad and flipped out. I just kept it a deep dark secret and stopped hanging out with my friend. The poor girl never knew why we stopped hanging out, but I just couldn't see her anymore.

When I was a teenager I met a girl who also spent a lot of time with my ex-best friend, and she got drunk and mentioned that the dad was creepy. I pushed and pushed her to explain what she meant, and she eventually described the EXACT same situation to me. She had also experienced my old friend's dad molesting her. I don't know why, but it was like a weight lifting from my shoulders. The shame went away and I could really talk to my family and close friends about my past experience. It wasn't just me and this guy was just a pedophile. 

But now my ex-best friend has a 5 year old daughter. And I feel almost responsible to protect her. My friend never did anything wrong, we just stopped being friends because I couldn't face her. But this might turn into a vicious cycle, where her daughter brings friends around and loses friends and doesn't understand why. I see pictures of her posted online and I feel so guilty. 

So, do I tell? What should I do? I just can't do nothing, can I?
<bot>: Friend's dad molested me, we stopped being friends because I couldn't face her dad, but now she has a 5 year old and I'm worried he might molest her or her friends.