To make someone your number one romantic focus, your main person. Borrowed from gaming culture where your 'main' is the character you always pick — applied to crushes and romantic interest.

Infidelity, romantic deception. To put 'cuernos' is to be unfaithful to your partner; to wear them is to receive them.

A blabbermouth, loudmouth, or someone who can't keep their mouth shut about other people's business. A bocón always manages to be the one who spills the secret, ruins the surprise, or shares what they should have kept private.

A dramatic and visible positive transformation — physical, emotional, or in lifestyle. A glow up means you changed for the better in a way everyone can see, and it often happens after a difficult period like a breakup or hard year.