My fiancé cheated on me and regretted it

Few months ago, i met my long distance boyfriend irl. He proposed to me, and i became the happiest girl. Nung patapos na yung vacation namin, i caught him talking to other girls on instagram. I was so hurt that i started freaking out, and i was fuming of anger.

When i went back to the ph, ang lala ko mag overthink, and we argued almost everyday. He told me it's like I'm keeping him in prison.

I checked his followings like a crazy woman and everytime i see he follows a new girl, i follow her too.

Until the final bomb came, may finollow siyang babae and i liked the girl's highlights on instagram. He approached me angrily and blocked me. So i concluded that they are indeed, talking.

He apologized the next day, telling me he deleted his instagram so i wouldn't overthink.

Pero hindi eh, may iba akong na fi-feel.

After christmas, i decided to search that woman, i messaged her & she was mocking me, i found out they were still talking on whatsapp. It broke me into pieces.

I found out they were a couple too.

Tinwo-time ako.

I confronted him about it, he was telling me he felt like he wanted a new partner because of me acting crazy. I told him stop talking to anyone.

He did stop everything. He admitted he was using dating apps too.

That was my last straw.

I started to detach.

From that day forward, i lost all my feelings towards him. And he started to act different too. Siya na yung iba mag overthink when i started to act nonchalant towards him. I never brought up any girl since that day.

He is trying to win me over gifts, flowers, & flight tickets to see each other. i saw he deleted every dating app he has.

He plans more about our wedding & settling down, which he doesn't do before

I made a fake account & started to talk to him. He told me everything he felt. Na kesyo na konsensya sya sa ginawa nya & he realized i was the one for him. Also, he told me he never took me seriously until he met me irl.

But now, i don't feel anything. I barely reply too.

He messages my family and friends pag di ako nag re-reply. He sets up surprises for me too. Our world shifted & now i don't know why i'm still staying.

I feel numb.

Edit: Thank you po sa lahat ng advices nyo.

Sa mga nakaintindi & nagagalit dahil antanga ko.

hindi ko naman sinabing hindi ako makikipag hiwalay. FOR NOW, hindi pa talaga kaya ng mental health ko.

Nag de-detach lang ako hanggang kaya ko na fully to walk away.

Mahirap mag open up sa family ko about sa situation ko & i was dependent sa partner ko simula nung naging kami. May mga supposed date na kasi sana ako ng migration prior nung nalaman kong ginagago nya ako, may properties and negosyo din kami as a couple.

Hindi ko pa naiisip pano i ju-juggle yun ng basta basta.