i can understand your situation. after knowing that your boyfriend was cheating on you in the past you have repetitive intrusive thoughts that he can cheat again. this feeling of suspiciousness is normal to some extent but if it is troubling you making you restless and disturbing your daily routine then treatment is required. i will suggest you forget the past you have already planned to marry him. it will be better if you have positive thoughts in your mind. you can also visit a psychiatrist for counseling and behavioral therapies to learn how to control negative thoughts. keep yourself busy in work do some light exercises yoga etc. talk to your boyfriend about how you feel. it will help overcome negative thoughts. for more information consult a psychiatrist online --> <link>
how to overcome the fear of my boyfriend cheating on me again?