does you husband have any pains or torments you are aware of? when is he most loving to you (if ever?) why that day or that time? need he need support or strength or friendship from you then? can you use his need as a door to your needs, just to get the juices flowing? be careful, if he's got a bad side, it's just as possible it comes forward also...

try seeing a marriage counselor... is there one in your church? Also, if you live near a larger city resources are easier to come by on the cheap... Maybe individual counseling for yourself if he's reluctant...

The other advice you received is excellent. Suicide may be nothing more than ending life... you sound like an intelligent and compassionate person, the earth would cry a tear the day you died...

"Our greatest glory is not in never falling, but rising every time we fall." Confucius