Are young men tend to be more competitive & jealous towards one another?

When i was 18 at college i remember dating someone who were 21 around the time when we first met he literally fought with student over me in bar and i wasn't aware til he told me, also i often see him starting to touch me when he in place where there lots of young men exists. Also once be admitted that he get quite jealous when he see me interacting with big blond guys (he was big blond guy as well) and overall big guys. But now im 24 and dating someone 30s and he never gives this energy that much

Are young men tend to be more competitive & jealous towards one another?
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