I have heard the following sentence in the Narcos TV series:
Se pasará la vida huyendo si no lo alcanzamos.
Context: two detectives are discussing about an informant who snitched on his boss Gacha, one of the leaders of the Medellin cartel. One of the detectives says the sentence above. The subject of the sentence is the informant and the pronoun "lo" refers to Gacha.
What does the pronoun "se" mean in the sentence above in which "pasar" means "to spend (time)"?
DLE ( https://dle.rae.es/pasar) and WR (https://www.wordreference.com/es/en/translation.asp?spen=pasar) gives some meanings of the pronominal verb "pasarse", but none of them fits in the above sentence.
I have already read All about datives, or: What's that funny "le" or "me" doing in there? , but I am still unable to grasp the meaning of the pronoun in this sentence.