Not sure if fiancée is cheating
My fiancée n I have been going out for over 2yrs. He asked me a few months ago to marry him. For the last 6months our relationship has been up and down. The last few months it seems like we always agrue. He was always going out hanging out with friend over-night, who is a male. Then about a month ago I found out from that friend that my fiancée has been cheating on me with this girl. That he was told I wasn't his girlfriend but his cousin. I confronted my fiancée about it and he said that they were just friends and that no he wasn't hanging out with his male friend and hasn't for awhile. That he was hanging out with some other male friends. That this friend owes him money. That he's mad at my fiancée for asking him for the money back. My fiancée tells me all th time he loves me and I make him happy and that the other girl has always just been a friend. But he's not going to loose his friends over this situation. We'll prior to finding all this out found her Facebook page and it had all these pictures of him and her. I asked him about them and he said Facebook is a lie and nothing on her page is true. What do I believe my fiancée or his friend?