I (M25) am considering leaving my fiance (F25) We have been together since 2018 and I've been engaged to her since late 2022, but I've found out she was seeing a guy she had a crush on. She lied to me about it and said that we're just friends but I found out she had feelings for him and he had feelings for her. They went on unofficial dates while confessing their feelings for one another, the whole time she told me I was being controlling and absurd. (I was stupid during the time of these events I was too trusting) But I never had any concrete evidence about anything actually happening.

But I found out last year that they were not just friends she said "it wasn't romantic it was just he was a guy I found attractive And I was lonely" she claimed they never did anything physical and I have no evidence they did, but the fact that she lied to me is greatly concerning to me and I feel I was two timed would you consider what she did cheating? Are we too far gone? If I leave her AITHA?