Learn Spanish (Spain): Ella acaba de ligar con otro chico. - She has just flirted with another boy.

In Spanish, the phrase acabar de followed by an infinitive (like ligar) is used to say that someone has just done something. Even though the action recently finished, you use the present tense of acabar for things that happened just a moment ago.

Does ligar only mean to flirt?

In Spain, ligar can mean to flirt, but it is also very commonly used to mean to hook up or to pull (successfully finding someone to kiss or go home with). The exact meaning depends on the context, but it generally involves romantic or sexual attempts or success!

Why isn't there an un before otro chico to mean another?

In Spanish, the word otro already means another or other. Adding un before it is a very common mistake for English speakers, but it is never used in Spanish. You simply say otro chico.

Could I use a instead of con after ligar?

No, the verb ligar pairs with the preposition con when you want to specify who someone is flirting or hooking up with. You flirt with someone, so it translates nicely to ligar con.