There are many men obsessed with the fact that you ever dated someone else, who you slept with, so that the images from his mind can torture his mind: seeing you in the arms of other men.
This kind of obsession makes them feel warned and very jealous. Others may even imagine the way you had sex with other men, torturing with the imagination of all details.
His lack of confidence does not depend from the number of men you slept with, he may feel insecure and jealous only because you loved another man.
For a man, the idea that you slept with other seems already horrible, even everything had happened before you meet. On other side, he likes that you already have a certain sexual experience. It is about the contradiction of two views: they want a panther in bed and at the same time a woman with a little experience reunited in the same feminine entity.
This type of obsessed man begins to torture his mind, if you really enjoy sex with him. These feelings are based on more factors that make him feel insecure and unhappy. Factors that actually barely have something to do with you.
If you have a rich “sentimental” past, and your lover makes you feel guilty, do not blame yourself for what happened in the past, because you are not responsible for his feelings.
Sometimes men can judge woman by her past.
I think that no man has right to blame you for your past, for the things happened before you met. If he puts you questions, reveal honestly your feelings, but do not tell him everything in details.
There should be no lies in a couple, but there are things from the past that you had better keep inside you, for e.g. number of partners you have slept with.
Your present behavior is the one that does really matter, once you are in a couple. Tell your man you love him and want to be with him, that you feel happy with him. If he loves you, he will look at you thinking that you are a great woman, he will be convinced that other men think the same too. He may often feel “in danger”, but you can take this as a compliment.
Jealousy is not always negative! You can make him feel not absolutely sure about your feelings yet. He feels happy being with you, even if others can fancy you too.