I totally agree and don't think you should get in touch with man #2 or #1 at all.
As for your relationship with man #3 I would suggest you do go see a councellor for yor own sake, you clearly have had a past that nobody deserves and maybe councelling might help both of you come to terms with the abuse you have both recieved. You may find that after time the difficulties you have had during your childhood may come to affect your relationship with man #3, and vice versa, and councelling may be able to help you overcome any difficulties before they have the chance to invade on your relationship.
Good luck with everything though!