<human>: This is an update to the [previous] post I did.

I recently discovered that she is in a (possible) new relationship with one of her really close male friends. She has been friends with him since me and her started dating and I guess things blossomed for them at some point after she broke up with me. I kind of figured they were in a relationship considering facebook shows everything in the news feed such as likes and posts and all that jazz. Also both their relationship status are set to 'prefer not to disclose.'

However, the weird part for me is that they are choosing to keep their relationship hidden. As well as they have custom photos settings put up for some albums (yeah I snooped around, but who doesn't). I do miss her at times considering our lengthy past and everything, but I am better off without her.

I guess I am trying to wrap my brain around if this is normal behaviour or not. Also partially venting/ranting that this happened. In my opinion no one goes to such an extent to keep things hidden from someone else in a part relationship.

Has anyone ever experienced anything similar to this situation? Any advice would be much appreciated.

Summarize the given text in a few sentences.
<bot>: found out ex-gf is in possible relationship with one of her male best friends, they known each other just as long as me and her's relationship was, has this ever happened to anyone else?