The problem seems to be that you treated a professional job interview like a therapy session and showed yourself to be a person who brings up situationally inappropriate subjects without a filter.

> I’m a little ashamed remembering myself talking about failed relationships, family struggles

It sucks what happened, but, yeah, you need to establish filters for yourself. No matter what they ask you, it's an absolutely terrible idea to bring up your failed relationships in an interview. Something tells me they did not ask for that private information specifically and you just decided it would be a good idea to volunteer it, otherwise the story would have said so.

It does not matter what you think they asked. You are the one in control of the words that come out of your mouth. This was poor judgement all around.