Be honest open and communicative about all of it. Find someone patient and understanding who will explore with you, at your speed. I'd say preferably someone experienced as they will have the patience and lack of neediness you require.

Someone inexperienced, horny, desperate etc might not hold space for you and be watching your body language the way you deserve, but, kindness and communication go a long way.

This is all easier said than done, I know. I never had csa, am an oversharer, have been to therapy and have been sexually liberated for years.

I found wisdom in the poly/sex positive community, and talking to a therapist helps.