Relationships are fake

In this fast moving environment, relationship are fake and you can't expect loyalty and longevity with any girl. I have been in to 6 years of relationship, this mf casually hanging out with other guys. And one random day, one lad call me up said he is going to marry my gf. How he dares to call me like this, definitely he had guts because of that girl. Seriously, our families were involved, I consoled and support every inches in her family when her father died. Made her elder sister marriage memorable. What I get in return? In fact, approached by many colleagues in my office but always avoid such circumstances. My relationship had become a joke, infact life had become a joke. Not being a cry baby here - Just sharing my chapter of life, whether it continues or not!