One, the scar will always be w/you and although I pray that you'll be able to feel 100% confident w/BF in the future, the fact that he should always need to "prove" himself to you is his pennance for straying. I'm not saying you'll never be completely at ease, but you'll have your moments and in those moments, it is BF's job to go out of his way to reassure you of his love and committment.
That I see as natural and human.
Two: be careful w/BF's quick dismissal of going to therapy. I realize I'm a huge proponent of it, but I also know that none of us are experts in that field, so in my opinion, you'd be very wise to always keep tht door ajar in case you need to explore it either as individuals or a couple in the future.
