There are certain word choices in headings to posts here that indicate to me that someone is/has gone through abuse. And your heading about being 'over dramatic' is an example.
When we are abused we are constantly told our needs are wrong and/or irrelevant. And we internalise this idea. And even when we walk away, it can take us a long time to re-learn that it is ok for us not to be ok with someone else's behaviour.
Best case scenario, this man didn't consider that this might happen and now genuinely feels bad. But what is he saying to you now? Not, 'we need to end things' but 'we can keep seeing eachother, just dont expect any long term commitment'. Can you see how that is not ok? It's not ok and its disrespectful for him to ask this of you.
It also sets things up perfectly for him to play with your head, if he is do inclined. Eg: to show up with another girl one day and be like 'well, I told you we weren't serious'.
Now, I'm not saying that he would do this. But, and especially considering you are still healing from abuse...run. You do not want to get sucked into another mindfucking world of pain.
You know when you can see a car crash waiting to happen, you dont stay in the car just because your radio is playing your faverote song.
Best case scenario, you are not compatable.
And op, you deserve to be happy and find someone who makes you happy. This person will only bring stress, insecurity and pain.
I often think life sends us tests. And if its sending you one right now its 'let's see if she respects herself more than she respects some guy, who he might be playing her like a fiddle'. Its an opportunity to grow as a person, to realise something is not right for you - and choose you.