My Vet: Combat Ptsd & Tbi. Told Me He Loved Me Then Went "dark"

Hello! Ill try to keep this brief and to the point. Would really like some advice or support as to how to handle my situation without pushing him away! A man I ve known as a close friend for 5 years told me he loved me, and wants me to be his "last". He was in Iraq. Air Force. Medic. Has Ptsd and Tbi. Goes to the VA every week. On meds. Lives 1800 miles away (yeah). His ptsd has been no secret the whole time ive known him. I dont know much more about it as uve always left that up to him.... My Vet: Combat Ptsd & Tbi. Told Me He Loved Me Then Went "dark"
https://www.myptsd.com/c/threads/my-vet-combat-ptsd-tbi-told-me-he-loved-me-then-went-dark.46250/