<human>: Give me a shortened version of the text

About a year ago I moved to a foreign country I had little connection with on the advice of my very close friend and mentor, "Matilda". Matilda's long distance fiancee, "Denis," lived in the city and she asked him to help me find a flat. When I arrived in my new city and met Denis he informed me that he was in fact breaking up with Matilda because of the long distance, but would gladly help me in any way he could.
	Against all better judgement, Denis and I began an affair that has turned into a serious relationship. When he told Matilda that he wanted to end things with her she did not take the information well. She had a nervous breakdown that included self-harm and psychological intervention. During that time, Matilda reached out to me for support  and I gave her advice, lying through my teeth while knowing I was the cause of her misery. Matilda even showed up to the country I live in to try to win him back and stayed at my flat. Since that time, I have distanced myself from Matilda. She still does not know that Denis and I are together.
	The guilt I feel is overwhelming and all consuming. I have nightmares about Matilda finding out and I have so far not told my family about the situation because they would not approve. While I love Denis, I worry that our relationship will never be able to transcend it's sordid beginnings. I feel that I stole Matilda's happiness.
	 I keep waiting to be punished for my transgressions and I genuinely grieve the loss of Matilda's friendship. I also obsessively follow her social media presence, which makes me feel worse. How can I ever come to peace with my betrayal? Can I ever really trust a relationship that began as an affair? Does Matilda have a right to know the situation, and if so, how should she be told?
<bot>: I stole my best friend's boyfriend and she doesn't know yet. I'm in love but I feel awful about it