girlfriend's parents

My name is ### and my girlfriend's name is ###. We are in a relationship for the last 10 years. My parents know about our relationship very well and they are happy about this... but when my girlfriend conveyed to her parents they are strictly saying that it's not possible... because of this...

My name is ### and my girlfriend's name is ###, we are loving each other for the last 10 years...my family knows about our relationship and is happy about that, but when today she conveyed to her parents, they are not allowing, so I kindly request your prayers and blessings for us.