I got hard when my friend asked me to prepare his dish.

A few years ago I had a friend with atrophy in both hands. He was very functional, he wrote, he worked, but there were some things he couldn't do. One day, during lunch in high school, he came up to me shyly and whispered asking if I could help him prepare his plate. I founded it strange, he was already a grown man, in his last year. So at first I was offended, but when he said he couldn't serve himself and hold the plate with just one hand... things changed for me. I immediately felt weak, not out of pity, but because I found it incredibly cute, because he was embarrassed and confided in me something he didn't want other people to hear, he thought it was a sign of weakness. I did my best to serve him, I was very affectionate while he guided me around the food, asking what he wanted to eat, how much, if he needed help... basically, I felt like his sweet little girlfriend. Which is strange, because I'm a man, but still... I got hard and blushed, serving him and being affectionate. I even wanted to do it again, but the next day he wouldn't be eating at school anymore and I didn't have the courage to ask, would be strange... But if he asked me to feed him, I would, just because he made me happy. I even considered the possibility of having some kind of subservience fetish. I have, but it was more than that. I felt useful. Not just because I was serving, but because he couldn't do it and trusted me to help even though he was ashamed. I didn't receive that much attention before. Years passed and I never had the courage to admit that I was interested in him, mainly because I could be rejected. But I really did have feelings for him, that's what triggered it in me. My beloved needed me. It was sweet.