My boyfriend came out to me not to long  ago  also.  Not  a easy  thing to put your mind around.  Confused, Oh Yes!!!!! 
A 4 year relationship,  everyone in here has been very helpful, and I thank them all very much.  OH TRUST ME GIVES FOOD FOR THOUGHT.  So many question,  and I have no answers.  I love my SO dearly.  Still makes me think were this is ll going.
I wish you all the best,  not going to be a easy road.