I am starting to see a guy I was dating a couple of months ago. I was sort of ignoring him all this week because I didn't know if I really want to start a relationship with him or not. We have different schedules which makes things difficult, but my doc. said that I was just making excuses, so I decided to just go for it and see what happens.
Anyway, he came over last night. After hanging out for a bit, we ended up being intimate, but (as usual), this was difficult for me. He was really good about it and stoped early, even though I told him everything was okay--(he could clearly see this wasn't the case).
I decided to tell him that I have PTSD. I didn't go into detail or anything, but he just said, "Did something bad happen to you," and I nodded. He then said that he would never hurt me.
That was about it for the conversation, but I'm glad of that since I am not ready to share any details and I don't want to overwhelm him or anything.
I feel SOOOO relieved! 
I have been told that I need to discuss the PTSD when I'm in a new relationship, but I never know how to go about it, and I typically say nothing until it's too late and the relationship ends. I have no idea of this one will work out or anything, but I do feel like this will help me to be able to disclose the PTSD early on and perhaps be a bit less ashamed of it.