Less,
I am sorry to hear that you grew up in a terribly abusive environment,but you can hardly infer that your situation is the norm.
However, you have all naysayers about the shidduch system who say that people met on their own back then and therefore they chose more suited mates. Quite the contrary to what you are avering.
You have to make up your mind.
As an aside, there is no question that frequenting social media can certainly affect even a healthy relationship. When one statrts sharing all sorts of personal stuff with others, it can lead to devoloping relationships that can harm an exisiting healthy relationship.
And Facebook is all about that, sharing stuff and then interacting. Do you really think that intercating so cannot poosibly lead to relationships where there shouldn’t be?
How else does one build a realtionship if not through sharing and social media encourages sharing well beyond what used to be typical. And may lead to having one’s guard down.
It is not just “symptons”, it can actually be the cause.