Is there an objective truth of looking at life/things and if so, what is it?

I’m having a crisis. I was left by someone who said I was too young, too boring and unintellectual (because I wouldn’t be concerned about explaining in a scientific and throughout way what things meant in my opinion). He said I was a disappointment. He wasn’t this scientist, rational curious talkative being when he was with me(he wouldn’t ever comment on anything or elaborate on things, he was way more guilty of things he judged me for) so it seems like he just observed and judged me then mislead and left me. I don’t know what this man expected but I am an atheist who is very passionate. I care about moments. I am curious about life and humans. I make art, etc. I don’t know how to get rid of this haunting thought of not living “truth”, which right now seems like he has a great understanding of. He isn’t a good man, he runs away easily and he judges harshly. But somehow I feel less of a person than he is because he understands “truth” of living. He claims to be rational, fascinated by the natural contents of the universe and wanting to study it closer.

I want to know Truth. I don’t want to be the religious of the atheists, if that makes any sense. The feeling of being stupid, not understanding life and being rational gives me discomfort at all times. I feel like I am not fitting in the Truth spectrum.

Please help?