So, i (23) could also need some sort of advice regarding the friendzone...
Basic History:
Met her (21) nearly one year ago, and we developed feelings for each other -problem was, she had a boyfriend but in January we had a short "affaire" till she decided a week later, that she want to stick with her boyfriend and we should stay friends...
Well, i wasn't happy about this, but i accepted it, since i could understand that you don't break up a good relationship for a maybe short "puppy love" and besides that i also don't want that someone else messes up my relationships, so i choosed the "honest road".
Felt like

for several month, and even now i still have slight crush on her - but - last week we talked and she (still in relationship) told me, that there's a guy she's attracted to (but only "physically"), she also told me, that she now has an open relationship and wants to meet this guy on sunday...
Well, i got somewhat angry and told her (basicly) that if she really take this route, this will be the end of her relationship - because either she fells in love with the new guy or her boyfriend can't accept it, if she sleeps with other guys.
Well, she also got angry on me, told me to shut up and since then we had no contact.
Today i saw that she changed her FB Status to "Single"..
So... what should i do? Talking to her as the friend i was before and then watch how the other guy f

her? Approaching her aggressivly or simply wait few weeks, till January, when we met in a seminary at university anyway? Or simply never talk to her and get over her?