Girlfriend problems, what should i do?

My gf and i were together a couple of years ago we both loved each other very much but we had to go our own way due to school such. well we recently got back together. Everything was going fine untill i started to see some things about her that bother me. She likes to go out to clubs a lot and get really drunk and dance on bars, she also has a lot of guy friends and she likes to spend the night at their house sometimes after a night of drinking, she also told me that she likes to flirt with guys at work ( she works at a drycleaning place so there is new guys that come in all the time). She also likes to go ut with her 45 year old boss who is single and his guy friends who are also single. She is 24. They like to go out to strip clubs and get the vip table. They also go out to the casino and go to a couple of clubs there and then he rents a room for her to spend the night. She also lets him pay for all this fun stuff. She almost never tells me were she is or when she will be back. i trust her and i known her for many years but the things that she does just really bother me. The reason for that is cuz it really makes her look bad and it makes her look like she is some sort of escort girl. Ohh yea. She also went on vacation not to long ago with a couple of her girlfriends and a bunch of her guy friends. They rented out something like a beach home. She told me that she would share a bed with all the guys there instead of staying in a diff room with the girls. Well heres my problem. I told her that all this bothers me, and the first couple of times she just kinda made up some reason not to talk about it. So i kept telling her how i feel about this over a couple of weeks. Eventually she told me that she is not doing anything wrong and that she can do whatever she wants and it dont matter if she is single or not. She got so mad at me that now she wont talk to me at all. no txt, no phone call, nothing. I ran into her at a bar not to long ago and she was sitting there, with her boss, joking and having fun. Its like she dont care at all and she is trying to make me feel like im the bad guy. Well what do you guys think. Am i wrong here, am i a bad guy. Idk what to do anymore. Please help.