less marriage need help on fixing this?

We have been married 12 years and have 2 kids (8,6) together. I regret that cheated on my husband with a coworker it happened over 6 months period. When my husband found out I told him was sorry and that wanted to make things work. That I love him with all my being and was a stupid mistake. Since then we started counceling that was almost 10 months ago. We have not had in that 10 months he still tells me he loves me and we kiss and snuggle on the couch but zero . Have brought this up in counceling and he says the thought of me with another man just kills him inside when try to think about having . The counceler says it takes time but that maybe just too much damage has been done and divorce might be the best option. I love him with all my heart and wish could take it back but can not look for advice on helping him get past those thoughts.