Liar.

Recently my best friend(Shania), who I am so close to I consider a sister, lied to me. We started fighting when she started dating a guy named Anthony… When they were dating I told her “If you two do anything then you will loose respect that I have for you.” she told me she wouldn’t… they ended breaking up a few months later, then a few weeks later everyone started calling her ‘Squirt’ or ‘Squirtle’. I then asked them why they were calling her that, so they told me “Anthony and her had sex in the back of his car and it was all wet.” the next day I told Maddie “I don’t know what or who to believe if they did or didn’t have sex.”…Maddie told me “Oh it’s true, they did do it. Anthony texted me and told me they did it. So I texted Nia and said ‘So you and Anthony had sex?’ Shania replied ‘Yeah we did'”…..I was beyond pissed…. So I texted Shania saying “We need to talk.”, she called me saying “Want to talk now?” I told her yes. So I went to talk to her, before she could even say anything I yelled “You lied to me”, she said “What?”, I told her “You lied to me about having sex with Anthony.” She of course said “EW, why would I want to have sex with him?” I yelled “You fucking admitted it to Maddie, don’t fucking lie to me.” She said “Wow” and I walked off. Later that day she talked to Maddie saying “So you told Sabrina?” Maddie said “Yeah I did, she deserves to know.” Shania said “Well she wasn’t supposed to know”….. I can’t stop thinking about it. She said she was really sorry, I told her “Saying sorry just isn’t going to be enough this time.”……I don’t know if I’m mad or sad. Maybe I am feeling both, I just don’t want to lose her, she is the closest friend I have ever had… I literally cry because of how much I don’t want to lose her, I just am so mad at her for lying to me about it…..I don’t know what to do….