WATCH: Gretchen, Robi in awkward interview

Running into your ex is never fun, even more so when you're forced to talk to each other in front of a crowd that's in a teasing mood. Just ask Robi Domingo and Gretchen Ho.

Things got a little uncomfortable for the former couple, who shared the stage at a smartphone launch held Thursday evening, a clip taken by ABS-CBN News' Rhys Buccat showed.

The awkwardness began when the crowd cheered and clinked glasses as Ho, host of the night, asked Domingo, one of the celebrity endorsers, a question.

Both had trouble keeping a straight face during the exchange, dissolving into laughter as the ribbing piled on, with Ho even pointing to actress Jasmine Curtis-Smith at one point and saying: "Ikaw na nga mag-host. Joke lang."

In an interview afterwards, Ho, who announced the breakup, acknowledged that she did feel a little embarrassed: "Kaunti kasi siguro they can't expect it to be fully normal. Pero we're good, we're good friends. Hindi naman sobra. Sakto lang."

Ho and Domingo had been together for more than three years before their split this March. Both maintained that no third party was involved, and that they only wanted to focus on their respective careers at the moment.