I think it takes time to learn what is what when speaking to others. Give yourself time to learn (but hold yourself accountable, meanwhile, of course). For example, I was so used to telling my mother the scoop when I came home from school that it took me awhile to distinguish that it was okay to stop, and that I was not required to tell her everything. It took me time to learn what was sharable and what wasn’t. I still don’t get that sort of thing right always. I had to develop a new set of habits surrounding telling her things. I had to learn how to do it naturally, and not end up with bizarre pauses where I said, uh, I can’t tell you about that. My husband and I don’t even share all things on account of us knowing facts about other people that are not really ours to share. But if it relates to living my life, I share it. If all I ever said to any of my friends was, “Oh work went fine yesterday,” they would never know a thing about my life. They would not see me grow and change. Like I said, I’m still learning how to do this myself.
Remember, it is okay to tell a therapist about what is going on in your life, things like that, even if it makes your spouse or whomever look bad. If a woman is being abused, she must be able to tell someone and get help. Not everything is gossip, even if it might reveal to some person some negative information about a third party. Meaningful, just communication is not gossip. And it doesn’t have to be as dire as spousal abuse to confide in someone about it.
From what you have said, it sounds very unlikely to have been mortal.

Of course, you are always encouraged to tell venial sins in confession, so that you can receive grace and counsel and grow more. Pray especially for the virtue of prudence, which helps you know what to do in each situation. Set up some new mental rules for yourself about what you will share in conversation and what you won’t.
Remember, we don’t just fall into mortal sin. It is not an invisible trap (like a tiger pit trap or something) that we unknowingly fall into to our deaths. That is just it, is has to be seen and perceived first to count as mortal sin. Yes, if we knowingly and willfully bury our heads in the sand and walk around, then we can fall into the trap, but your example is not about that. You did not do that.

:console: