Help!

Hello Everyone please i really your advice.I av a lady i'm dating but something happened. She asdi she was going to sleep in a friends place for a night.I saw her off to the place But on the 2nd day she was supposed to be at home i calle dher no but cud not reach her and later called her elder sister who told me she is yet to come home.Meanwhile i had earlier on called her and she told me she was at home. While tryin to call her again at night, I did not reach her and called her sister who said she is yet to come home.I went to her house the following day and called her that i was a her busstop and shhe told me she is on her way home.I later confronted her and she said she went to a friens place. I later piled pressure on hr and she confessed that she went to check one of her male friend at Egbeda. She said she initially lied to me because she knew that if she told me, i wont av aloowed her to go and said she later slept there because ot rained heavily and she cud not go home and that it rained all day.I am confused.Help

Help please!!!!!! Iam a muslim and my boyfiend is a Christian.WE love each other dearly but our parents are against it because of the difference in Religion.I can't leave this guy for anything in this world.What do i do?Who can help