What should I do if I am in love with my girlfriend but still in love with my best friend?
Why do you think you're in love with your best friend?
At first, I was curious to know if we could work out as a couple and we tried dating each other and while it didn't work I fell in love with her.
I hear what you're saying, but I must say that it is very wrong and dishonest to be with someone if you love another person. You should come clean and break up the engagement, if you truly love your best friend. Otherwise you are lying to your girlfriend and hurting both her and yourself.
I'm going to end the engagement with her and tell her that I'm in love with my best friend.
Yes, that's good. You need to make a choice and not keep either person waiting.