[12][13] He went to San Beda College Alabang to pursue a degree in Information Technology, but put his studies on hold to focus on his acting career.

He was 16 years old when his mother made him join My Talent summer workshops headed by Trumpets Playshop founder and STAGES president Audie Gemora, to overcome his shyness.

[14] Before being introduced to the media as a member of the Star Magic Circle Batch 16, he appeared in a series of TV commercials, including a Lewis and Pearl's advertisement, alongside Coleen Garcia.

[16][17] He joined ASAP XV as one of Star Magic's "Gigger Boys" in April,[18] and in May, co-starred in the teleserye Rosalka, in which he played Andrew.

[21] In 2011, Gil finally nabbed his first lead role as Michael Miranda — originally played by Diether Ocampo — in the 2011 remake of Mula Sa Puso.

[23] Gil admitted, during the Good Vibes press conference, that he was set to appear in the ABS-CBN's remake of María la del Barrio but had to turn down the role due to conflicting schedules.

[35] Later in the year, Gil held his first headlining sold-out dance concert at the Smart Araneta Coliseum with special guests Angel Locsin, Vice Ganda, Kim Chiu, Kathryn Bernardo, Vhong Navarro, Jhong Hilario, Arron Villaflor, Rayver Cruz, Martin del Rosario, Arjo Atayde, Ejay Falcon, gloc-9, Young JV, G-force, The Streetboys, and Julia Montes.

He portrayed Carlo, a hopeless romantic guy who gives everything to his liberated and dominant girlfriend Lois, played by FM radio's first-ever roving DJ and Darling ng Masa Eva Ronda.

[38][39] On February 26, the wattpad author HaveYouSeenThisGirL admitted via Twitter that Gil was really supposed to be in the film adaptation of Diary ng Panget but refused to say why it didn't push through.

[43] On June 25, Star Cinema announced that Gil alongside Liza Soberano would lead the film adaptation of Kimberly Joy Villanueva's novel The Bet.

[44] On August 21, Gil took part in ABS-CBN Philharmonic Orchestra's debut album Decades of OPM together with Abra, doing their version of "Totoy Bibo.

[49] Later that year, Gil starred in his follow-up movie with Soberano in the romantic film Everyday I Love You with Gerald Anderson, directed by Mae Cruz-Alviar.

[54] In February 2016, Gil and Soberano returned to prime time with the romantic drama Dolce Amore, in which he played the role of Simon Vicente "TenTen" Ibarra, a poor and hardworking Manila boy who will do anything for his family.

The film was released in February 2017, grossing ₱31.5 million on its first day and won him the GMMSF Box-Office Entertainment Award for Box Office King.

[58] The same year, he took the role Dex in the family comedy-drama film Seven Sundays alongside Aga Muhlach, Ronaldo Valdez, Cristine Reyes, and Dingdong Dantes.

In the film, Gil played Rafael "Raf" Toledo, a University of Santo Tomas – Biology student and an avid fan of The Eraserheads turned doctor five years later.

In 2020, Gil appeared with Soberano in Make It With You as Gabriel "Gabo" Villarica, a lost soul who finds himself in the small Eastern European country of Croatia.

[62] The show was later cancelled due to the COVID-19 pandemic and the network's franchise renewal issues which marked the end of the loveteam pairing with Soberano.

[66][67][68] In 2013, Gil joined the PETA campaign "Free Mali" to transfer her from the Manila Zoo to Boon Lott's Elephant Sanctuary in Thailand.

[70] In 2015, Gil alongside the cast of Forevermore participated in Hoops for Hope: A Charity Basketball Game, a project organized by the Bakhita Canossa Foundation to sustain the construction of houses for the Yolanda victims at Brgy.

[74] In February 2021, Gil launched HKT Essentials with Soberano,[75] and a portion of the brand's sales went to Save the Children, as well as to a relief program for barangay-level health workers.