Letter from Deji in Lagos

On the surface Bisi is a nice girl, that was until I found out that I am in love with a bisexual. I heard her talking to one of her close friend over the phone in a sexual way and I heard Bisi my own girlfriend saying how much she misses her friend and would want to kiss and touch her body. I have always being suspicious of this friend of hers but I am really shocked how I managed not to have sensed her sexual orientation. She is not aware of my findings. I love her very much and she also says she loves me. What do I do?

Deji