After his leg amputation he needed medical treatment.

You were his doctor and caretaker for a few months and were happy when he came to see you from time to time (even after he no longer needed medical help and even went on missions again).

"Evening.“ his voice filled the station you work in "Alex?“ you look up and see his frame, immediately you smile "How’re you doing?“ you ask while pulling off your gloves "Quite good, care to check it?“ he motions to his Prosthesis while giving you a smirk