YES
NO
Kung pang Instagram lang pwede na Hinulugang Taktak. Di naman nila maaamoy yung tubig 😬
This was what me and my friends were talking about a few weeks back. I think OK lang naman, as long as ipapa-alam. TAKE NOTE, IPAPA-ALAM, hindi IPAPA ALAM.
In your case, if you're going to date the guy na ex ng friend mo, better to tell her na "uy, i know ex mo si ano pero hes asked me out kasi and I said yes. I'm telling you this to let you know lang." or something to those lines. Lalo na if di sila good terms ni ex.
Many may not agree kasi ex na and all, pero think about it if ikaw yung ex na. If that doesnt work, think of it as dating someone who hurt someone you care much about. The PA-ALAM isn't meant to ask for permission, but to let the other praty know that you're dating his/her ex. Dating a friend's ex will mostly be frowned upon as it crosses the line/"walang respeto", but telling them beforehand or early in the relationship is the high road when dealing with this situation.
It depends imho. Barring any extraordinary considerations -- bad breakup, somebody was a jerk, somebody cheated, lingering attachment, etc. -- it should be OK. But out of friendship, let your friend know.
Take note, let him know, not ask for permission. Whatever the situation, hindi niya pag aari yung ex nya.