My boyfriend married another lady for VISA, girl laments

My boyfriend married another lady for VISA, girl laments

From a female blog reader:

I’m a young lady in my early 30s i was in a relationship with a guy for 3year and then he travelled to the uk for his masters and when he came back came to the house acted like all was well and 2months letter i had he got married and now he says the marriage is hust a paper thing and he did because he needed to go back for his PHD and that he needed to be married to some one who is a citizen but in all of this the girl in question is a nigerian and the wedding took place here in Nigeria.
And he still says is just a paper marriage. Please what should i do? Please hide my identity