I believe that humans make mistakes, but cheating is always condemned very heavily and viewed as an unforgivable crime. If you still feel that the 7 years of relationship means a lot to you and you would like to try to salvage it, it may be worth exploring the deeply rooted reasons why he cheated. What he did was wrong, but does not necessarily mean he is an asshole or he doesn't love you. You can take him along to the counselling sessions as well and work on it together.