Hi, a successful relationship requires undying commitment, honesty and selfless love at the centre of it all. Yes whatever has happened is the past. And everyone has one. Your boyfriend has to understand it. Trust takes time to build up, how much time depends from person to person. Relax first. Introspect the entire u, him and the situation. Understand what he is going through.
Next Steps
And then kindly meet a psychiatrist or a couple counsellor for conflict resolution.
Health Tips
Remember every person has different coping mechanisms in life crises and situations. You need to be patient with him. Kindly get expert help.