help ? please read

I am currently getting over a bad brake up and have nobody to talk to about it ... 'My bestdriend' likes him and is siding with him for everything.. I was scared to open up to anyone bc I have had past experience and he didn't like that and told me he wanted a two week break.. I had told him that's just a two week window for him to hook up w/some other girl and come back to me.. I gave him the option to stay or leave permanently and he just said bye.. ? I just need advice and ways to get over him .. We started dating 7/31 so barely 3 months and we broke up yesterday ....