Advice needed

Backstory: my ex and I broke up several months ago due to him “ghosting” me. We were great for 3 years and 4 months until he decided to “have fun and get money” with his friends. I was hurt because at first he didn’t tell me. Took him 2 months to confess what had happened.

Now, he is begging me to come back and try again. He says he “changed” and “realized what he lost”. I am so lost because even though he wasn’t my first (to be sexually active with) he was my first in many things. I honestly think he is the first guy I have every truly loved! And that is what hurts me the most.

My question is whether I should give it another try or if I should continue to be alone?????? I hurt every day because like I said I really loved him. We were good one day and then the next we weren’t. It kills me but I KNOW what he did is WRONG in so many ways that I don’t know whether to accept his change.