Is my other half bi or lesbian?

hello i going to try to make this good as possible and its true story happening to me now. I need help on what to do ?
My fiance and i have been together for 6yrs and we know each other inside and out thats how connected. She has been thru depression on and off, but recently she has left me basically cause she says she is confused. she want to explore her self and figure out who she is. I found out last week she wanted an open relationship and after i found that out she and another girl had feelings for each other as she say. we are two states away cause she was mainly dealing with her depression as i believe. Now i am hurting and in pain and i truly miss her. She tells me that no matter what happens she loves me. But the question is does she loves me or in love with me. I dont know what to do. I told her to figure out her self and give her some space. But i feel if i meet someone down the road and she wants to get back its her loss. what should i do? i need answers.

also i need to know should i cut off all contact with her right now or not?

Well she probably doesnt know herself if shes gay or not. She said she needs to explore herself. Would you rather have married her THEN found out these things? At least she was honest and didnt completley shatter your heart. COulda been worse. You need to just give her her time. If someone comes along for you then that is whats ment to happen. Hopefully she figures herself out before its too late. But right now you cant do anything but be patient.

Best of luck