I need serious help. I was doing meditation everyday for the last 2 years and since I started dating last month, my life just shattered.

I am 31 M, doing meditation for last 2 years everyday and I was progressing so well. Worked on so many issues and solved it. Became a different version of my self. After gave up on love previously I again started believing in it and gave a chance to love. I started dating a girl and I slowly started compromising my me time. Started compromising my solitude, my spiritual journey and finally stopped doing meditation and completely got involved in the relationship as she demanded a lot of time. However i was never happy completely and my intuition always said that she is not the one and this will never work. However I kept on ignoring my intuition. She has issues with loyalty and is also a sex maniac and bisexual. Though I support lgbt but I am straight. Yesterday we had a house party and after having sex, she tried kissing one of my female friend, showed interest on one of my male friend and told them that I am not good enough in bed. Now my whole friend circle knows this and I am shattered. Though it’s just a 2 month relation, but it has done enough damage. I have started smoking again after 4 years and unable to digest the betrayal. I am unable to focus on my spiritual journey anymore and becoming more depressed everyday. I am unable to show my face to my friends as they think i am not good in bed and probably they are judging or laughing at me in their mind. Though my friends have showed me enough support and asked me to leave her immediately. I am so fucked up. I fucked up myself.