Laura,
You already know that your ex-boyfriend isn’t right for you. It would not be a good idea to see him again. The problems that existed in the relationship before are likely to surface again. It would take a lot of work on the part of both of you, and I sense that you would be cautious of the outcome.
As for meeting someone new– if you are involved in activities that you truly enjoy such as a club, an organization, or even volunteer work there is a good possibility that you might meet someone who shares your interests. Sharing the same beliefs and interests is a strong foundation for a lasting relationship.
Best of luck to you–
🙂