so my girl and i have been together almost a year now. Weve lived together for about 7 months. Things go good mainly. Im 27 and shes 21. Thats an age difference i know but i feel like she really carez. She bought me a promise ring and all that a buys me new shirts. She even surprised me with a 600 dollar guitar around christmas time. The only thing i have with her is that a few weeks back she met this chick (whos my age) that has a habit of meeting guys (who have money) and then sleeping with them the first night. Example was this one time her and her friend ( not my gf, just het other ehore friend who has a boyfriend at that very moment) were hanging at the casino we work at with these to guys that picked them up. They had them gamble with a thousand dollars and my girlfriend wanted to stay and hang with them. I said no and told her i wanted to leave and didnt want them around them. She said nothing was gonna happen and that these guys were just "nice" and buying them drinks. Pfft. I still insisted and she kept acting like she wanted to leave and then went back to the group sevetal times. We got in a fight over it because i dont want her to be in that type of company. Come to find out the next day that chick actually slept with one of the guys. My girlfriend came up to me and said that "she lost all respect for her" and blah blah blah. I could of gave her a "i told you so" but i didnt. But now, despite her knowing my basic dislike for this girl i find out she is planning a trip to vegas with this whore and her other whore friend and guess what? I didnt get invited. Not only that, a week after this vegas trip she wants to go on her and i have a two werk vacation planned ourselves. Were not rich either. Inspite of female friends i trust not trusting her to go to vegas with these whore i think she still would want to. Am i being disrespected and put to the side? Not only that, lately thing have been different between us. She seems to be bothered by little things i do most of the time we are around each other and its seems like its getting worse i.e., "i dont care, im not listening" that sort of BS but we still have good moments of affection. What do you all think? Are these the tail tail signs that its all over? Are we just two different people at two different points in our life?