Very few people come into relationships as a clean slate. Either they've been in a relationship that didn't work out, or they grew up in a family where there was a relationship that did or didn't work out, etc etc. We all have influences.
I think it's lovely when each partner understands, accepts, and is gentle with their partner based on their past experiences.
I do know what it's like to have a bit of PTSD based on past stuff. I also know what it's like to have a partner who wishes nothing but the best for me, and does his utmost to help me through it. Doesn't hurt that my husband took an action while we were engaged that didn't much help with the PTSD (took off one day, moved his stuff out while I was at work). He got counseling shortly after that, realized that it was HIS stuff that HE needed to work on, and that he quite loved me and felt horrible for doing that.
As he got counseling to work on his own stuff, I remembered counseling that I had had in my past to work on my stuff. In the past, my dad actually paid for my counseling, once he truly realized how his nonsense had affected me and my relationships and choices in partners. Nothing says "I'm sorry" like paying 1000s towards your daughter's therapy!
Later we went into counseling together.
My husband had a short-lived marriage, only 9 months, where she ran up his credit cards then took off, supposedly to look for an apartment 2 states away, then dumped him. So when I have traveled on my own or with our son, I make sure he knows where we are. When I spend money, I let him know so he isn't surprised.
When my husband is late, he tells me ahead of time. We are in contact throughout the day. While he was moving out in '02, he had logged into work through a proxy server, so for a few years I was really nervous that he wasn't at work when he said he was at work, and he was NEVER annoyed when I got nervous.
His care for me got me (and us) through. If he'd been dismissive, it wouldn't have worked.
Our emails are open books to each other. Everything I post online, I'm not afraid for him to read. A friend, as she dumped our friendship, tried to start a fight between us by telling him things I had written...alas, I had told him those things *first*, so it didn't bother him. She failed at starting the argument, b/c we have an open-book relationship, while her own relationship was full of "oh I can't tell him THAT" nonsense, etc.
Both hubby and I have stuff in our past, so we made our relationship a very talky one, with no bad consequences to having worries, even though they are silly. For a few years I did have BIG overreactions to stuff! My friends thought I was being ridiculous. My now-husband didn't. He held me, helped me, he did everything he could to show me he wasn't the exes, and wasn't the guy that took off one day (we were out of contact for maybe 3 days, then started talking again, and he was in counseling inside of a week).
Before hubby, I dated a series of alcohol abusers and smokers (not tobacco), who seemed to enjoy cheating on me (or trying to cheat, which is really pathetic). My husband is the opposite of those things, but he's always been a good friend to women (he was the quintessential "good guy" to his female friends, that they never saw as boyfriend material until I started dating him), so he is around women, and he's always VERY careful to tell me exactly what women he is friends with, how he knows them, etc. He takes my past into account. He also doesn't feel it's appropriate to have a close relationship with a woman, once you're married, and that definitely works for me.
With your guy, he isn't acknowledging your past, he isn't taking good care of your heart, IMO, from what I read on the first page. If he wants you to be healthy, he should be helping you. If helping means being an open book, or by curtailing his daily talking, or supporting you in having counseling to let go of your past, etc etc etc, he should be doing those things.
If HE were having bad reactions to things you did b/c of past stuff, wouldn't you want to help him through, not just be annoyed that he was reacting to you through the filters of his past?