Is my girlfriend losing interest in me?

hey well ive never used one of these but im really lost and i dont know what to do ive been going out with this girl for over a year now and shes great liker i love spending time with her shes the best girl ive ever met like shes the total package for me...

and now it seems shes kinda like losing intrest in me for no reason like her job is kinda getting in the way and that dosent bother me its the way shes been treating me like she makes it seem like she dosent care like she went to a work party and i was like okay have fun but i was a little worried she would be dancing with other guys cause she would be drinking well she got drunk and grinded with some guy from her work for wat i was told around 5 songs and i was very mad but yet very hurt that she would do this and wen i asked she said she didnt care and it was nothing and i should get over it but it really hurt me cause she told me she was thinking of me all night but then it ended up her dancing with some guy all night and then she got mad at me and now i just feel terrible and dont know what to do cause i love her but she seems to no care about me someone please help me out should i be mad and if so what should i do because she kept saying she would do the same thing and stuff and this really hurt m,e and now im just very depressed about it that she would grind with some guy all night thankjs

thats no bueno. i would be really hurt too . we seem to both have relationship problems.. lol thanks for youre advice on mine. Uhm does she admit to it? i mean yea its pretty fucked up but if you really love her you should learn to get over it this one time. i wouldnt deal with it again and tell her strait up you kno you do somthing like this again and its over. tell her ur feelings and how you hurt from the situation.if she loves you shell feel bad, and if she doesent youll be able to tell by her response to ur comment.