Hi, he just needs time. Convey your love to him and let him know that you are with him. Just hold the space for him for a few days till he feels good enough to open up and speak his heart out to you. Stress brings in negative thoughts and feelings which is quite normal. This phase will go.
Next Steps
Kindly meet a psychiatrist and a counsellor to see what else can be done for both of you.
Health Tips
Patience for now.