Soo upset 😔

The guy I've been seeing for the past maybe 5 months and I have been a little rocky recently due to his depression and an argument we had. We work together but we haven't actually hung out in about a month 😩 however we talk on Facebook everyday! Tonight he's out with another girl from work (she a few years older than him and they've worked together for about 4 years so I'm just assuming that they are just friends and he's told me that he doesn't find her that attractive). I'm just upset because a he never sees me and he's out tonight with her b if they end up having sex or something it's not like I'm gonna know ???? Ya feel me???? So right now I want to cry my eyes out because you know life sucks and it can never go the way you want!!! Just super sad and I need some opinions and words of wisdom!!