Singer-actress Regine Velasquez couldn't help but feel emotional during a recent episode of "Magandang Buhay."

In the show's “Dear Momshie Serye" portion, the 51-year-old star recalled being the "third-party" between her husband, Ogie Alcasid and his former wife, Michelle Van Eimeren.

"My husband and I started that way, pero yun kasi, we were good friends. Hindi ko naman sinasadya," the Asia's Songbird shared.

"Kasi puwede rin namang mangyari rin talaga yun, e, na, kagaya ng sinabi mo na, hindi mo naman pinipili yung mga mamahalin mo, e," she related. "Hindi mo naman... parang, gusto ko bang sadyain yun, gusto ko ba na merong masaktan, di ba? May mga matitinong tao na hindi naman yun ang iniisip nila. It's just that sometimes it happens.”

But Regine reiterated that at the time, she didn't know what was happening in Ogie and Michelle's marriage.

"I don't know kasi hindi naman ako kasali doon, e. But it happened. But I just have to say, it was so difficult. And if I can bring back the time? I love my husband, but if I could bring back the time, siguro mas gugustuhin ko na wala kaming nasaktan," she said.

"Na walang dalawang bata na nag-suffer because we wanted to be together," she continued, referring to Ogie and Michelle's daughters Leila and Sarah.

According to Regine, for the longest, she had to live with the "guilt."

“And like you said, before you, kunyari meron kang nagustuhan na tao and may asawa pala, hindi mo alam, before you really make yourself involved with this person, isipin mo muna sa sarili mo kung kaya mo ding panindigan yun," she related. “Kasi really very, very, very difficult to be in that, kung matino kang tao, ha. Kung hindi ka matinong tao, e, di parang deadma ka na lang, di ba? Wala kang paki."

"Pero minsan, mahirap din maging totoong matinong tao pala. Kasi for a while, I have to say, I had to live with that guilt. Like, I was living in that guilt and my husband would say, 'It was not about you. It was about me and Michelle.'"

But she said, however, even then, she was there.

"I was part of it. I was the 'third party,'" Regine admitted."And for a time, na-forgive na ako ni Michelle, na-forgive na ako ng mga tao, except me. I wasn't forgiving myself. And I'm still working on it.”

Regine related that every now and then, she would remember what happened and she would still feel guilt.

"So, mahirap din to be in that situation na hindi mo naman sinasadya na magmahal ng tao," she said. "And I'm a decent person and I do not want to hurt anyone. That's the last thing that I would want in my life, alam mo yun, but it happens."

But she assured fans she is okay now.

"I think I'd already forgiven myself, yung hindi na ako masyadong nagi-guilty," was how she put it. "But once in a while, I would, like, remember, and or kapag may nangyayari doon sa dalawang girls. But iniisip ko na lang, hindi na yun yung sitwasyon, e. Ako na yung asawa niya, e."

"Hindi na ako, oo, I'm not outside anymore, I'm his family now. So, tina-try kong tanggalin yung sarili ko doon," she added.

However, it's very "difficult" for her because she's the kind of person who remembers things.

"I don't like anyone, parang, very sensitive ako na ako na lang yung magsasakit-sakitan, kesa masasaktan kita," she said.

Meanwhile, Regine gave some advice to those going thorugh the same.

"I guess doon sa mga nagiging third party, of course we know what's right and what's wrong. But sometimes, when you are in that situation, pinipili mong huwag tingnan yung mali. Pipiliin mo lang tingnan yung puso mo. And it's very difficult to decide not to be in that situation anymore because doon ka masaya, e, sa feeling mo.

"But you need to give importance to yourself. You need to love yourself and you need to decide. Masaya nga ako temporarily, lalo na if the husband ay hindi nagdi-decide kung ano ba talaga. Kasi maraming ganun, e.

"Pagkabinigyan mo ng ano, 'Ako ba talaga o hindi?' Tapos mag-iisip. Kahit actually sa wife, mag-iisip, siguro it’s time for you to decide kung ano na yung... lagi mong dapat pipiliin yung sarili mo.”