Sounds like what I went through. I wasnt open to marriage but then I met my husband at Chruch. At first things were very good! But then after we got married I realized that slowly I was being undermined and treated poorly. I spoke out about this and nothing changed for the longest time. Then we started marriage counseling with a retired LMCS pastor, and hes great
From the sounds of it you know what you're worth, that you dont deserve to be mistreated. Chances are you won't put up with abuse for much longer, if any time at all. Though I could be wrong, this is only how it worked for me.
This doesnt mean you won't expirence more abuse or heart break, but if you are with a dedicated Christian, humility will be a virtue they have...ideally. This means that with proper dicipleship, the relationship can get MUCH better.
I think for us who are sensitive and caring, we tend to attract those who think we can fulfill their desires. Sometimes these people have narcissistic traits, though not always. I do think though, that this isnt as daunting when dating within the Church, simply because Christians are willing to change. And if they aren't, then honestly I question their faith. Repentance is a core in Christianity, and repentance takes change and humility.
As for hurting others, you'll probably hurt others. Ive hurt others! We all hurt others. We are people, we can not avoid the burdens of being in this flesh completely. We try, but we fail. The good thing is when we feel bad, especially after someone tells us that we've hurt them, and we repent and ask for forgivness. This is a beautiful thing. Honestly for now im glad we exist here in the flesh, because even within the hurt there is good God has established for us to expirience. I do not have a feeling that I perfer more than reconciliation yet.
Hopefully these thoughts can be helpful! Im not single but not long ago I was. And you slightly remind me of myself