I gave all of me to the wrong guy

For three months since we parted ways, I cried myself to sleep every night, thinking why I wasn’t worth it for him. I gave everything, with nothing left for me. I loved him so much he was always the first and last thought of my day. I did everything for him. It’s my fault for completely letting myself fall for this guy, with no reservations and all boundaries surpassed. I loathe myself because though all the red signs were present, he wasn’t comital and I had the chance to walk away, I did not. Now he’s back with his ex and I am left crying again. Why, why, why? Why was I not enough for him? I repeat the same question every day. I tried to move on but I’m going on circles and it’s always a pity party. I’m tired, I’m about to give up on myself. Why must I love the wrong guy. I’m sorry for this pathetic post. Just need to let it out.