DH has 2 meanings
My dh took us out for dinner last night!
Wow, how thoughtful.
|H9||Husband in room|
|HOS||Husband over shoulder|
|Trophy husband||An attractive husband|
|Instagram husband||A person who takes pictures of another person for Instagram|
Sometimes used by women on online forums or social media websites when lovingly referring to their husbands.
My dh bought me the most beautiful flowers for our anniversary!
|TMG||That's my girl|
|TMDF||To my dearest friend|
Those who really love their husband may use DH to mean "dear hubby." This term of endearment is slightly more lovey-dovey than "dear husband," because it uses the abbreviation hubby instead.
For your purposes, however, it likely does not matter whether someone intended DH to mean "dear hubby" or "dear husband." All you need to know is that the person is talking about their husband.