@hawkgirl92
The main question (as you say) is only something you yourself can answer.
Sometimes, we all get hung up on past loves but that's what they are, hang ups. Gotta move on.
He also cheated on you. Its not like it was a minor thing, its a big deal. Maybe you thought the both of you really had something precious there. Unfortunately, it didn't work out.
Cliche as it is, there are plenty of fish in the sea. But you gotta go meet those new people first. Some may be better than your old partner, some maybe worse. But that's just the game, we call life. Gotta move on, gotta live it.
@hawkgirl92
You said you deserve someone better and that you are ready to move on. This is great, it shows that you're projected into the future and your awareness will help you in rebuilding your life.
Missing him is a way of clinging to the past. A place we can no longer inhabit. That's why it hurts so much. We can't change what we did or what was done to us.
Still, even with all the good intentions to move forward, we are all guilty of looking back and struggling with letting thet past go.
Sometimes, hurt is the only thing a person left us with. And we hold to the hurt as a last way to feel connected with that person.
Acceptance is a hard lesson to learn