Definition: Given a real-life anecdote of a complex ethical situation, generate a suitable title that describes the main event/root cause of the situation. Imagine that the given text is a social media post, and you have to write the title of the post, so the users can decide to read the main text or not.
Input: Hi Reddit

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I have a bit of a situation here with me and two of my mates.

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BM - Best mate, been friends since birth

MF - Mutual friend of ours, female

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Several years ago I had a serious crush on MF. Naive me thought I was in love with her. I told her how I felt one birthday and was (gently) rejected. However I was crushed and went crying to BM and told him all about how I loved her.

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For a long time I still had feelings for MF. I would always moan to BM about how I liked her but couldnt do anything about it. As far as I was concerned, and even though I would never be with her, she was obviously off-limits to BM given how I felt.

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Long story short, BM one day told me that he had matched on tindr with MF and then a couple weeks later, said they had been studying at the library together. I was a bit suspicious but didnt think BM would do anything to hurt me. Eventually however, he told me that he had been seeing her for a few months casually.

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When I heard this I initially pretended not to care but was actually deeply hurt. I told him to stop as it was hurting me. He chose not to. Then one day I boiled over and went to his house knowing MF was there and dragged BM outside to blast him.

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AITA for being made at my mate? Surely he shouldnt have tried anything with her knowing my emotional investment. When my mother found out she was crying because she herself knew how much I liked MF, just for some context.

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being mad at my best mate for seeing a girl he knew I liked