Forcing people into IC is rarely helpful. Why don't you ask for what in terms of a you want (healthy stable partner with improved communications skills) rather than dictating the means he takes to get there?
Studies on the usefulness of IC in the long-term are spotty at best, and it really isn't going to do much for limbo-H if he feels coerced into going. If IC works FOR YOU, that is great. Don't assume it is something that will work for limbo-H, and don't force it. Recent studies suggest that even antidepressants seem to be of negligible use for depression except in severe cases.
