Relationship

Hi it’s something going out n before me and my girlfriend would have best times every for 5 months sex been a big problem she argues with me pick fights leave all the time only time I see her is when she’s coming in to go to sleep.she don’t wanna hug or kiss me and when I speak about my feelings she gets mad and leaves all the time I don’t know what to I got to work everyday a 100% general men and all I’m getting is the cold shoulder what should I do what could be going on and sex is so low on a month it would be 3 to 4 times a month when she wants it.She don’t wanna go out with me to do anything man has feelings to i don’t know what’s going on I’m sexually frustrated all alone what tops off ever thing I got a engagement ring for hurt I was about to give it to her but I’m so hurt by what’s going I don’t know what’s going on what’s your though help me!!!!!