A furious girlfriend stormed into a gym to confront her allegedly cheating boyfriend by bringing printouts of her evidence.

Jia Ramirez learned from concerned friends that her partner, Albert Pagaduan, had been two-timing her with another girl he met at the boxing facility in Manila, the Philippines.

Despite having her heart broken, the meticulous girlfriend pretended not to know until she had enough screenshots and pictures before confronting Albert publicly.

Footage shows Jia entering the gym with supportive friends. She called Albert and showed her the printed pictures of conversations he allegedly had with his lover.

There were also pictures of him and the other girl sent to Jia by friends who knew what Albert had been doing behind her back.

Jia said between slaps to Albert's face: 'Do you know what these are? These are all of your foolishness.'

She folded the thick pile of paper and hit Albert's face, but the boyfriend remained silent, listening only to her.

Jia added: 'I gave everything to you. You know I can not support you financially, but I gave you everything else that I have.'

The confrontation lasted for almost half an hour before Jia's group left.

She said to the gym owners: 'If you do not want me to drag the gym's name in this mess, refuse him membership. You are all part of this. You should all be ashamed.'