Good and bad with dating sites. I went on them with a plan and a clear set of guidelines. I went on a few coffee dates then I met Josh and never looked back. We will celebrate 8 years together on April 1!!!! Things are peachy. I could not have found him in my city.
That guy was a slimebag and he thought you were easy because you showed some interest in him. Good for you for not "going there". Like you, I married my first boyfriend. We were together 30 years when he cheated and ran off. Having sex again just terrified me but with the right person (someone who cares a lot about you) - it has been terrific.
Make sure you are ready and go to counselling if you are not. You need to heal yourself from your hurt before you are ready to give your heart to someone new.