The first "I love yous" are from the seme, he tries to ease the uke's fears with that,
the uke is nevertheless scared but says his "but I love yous" and this answers the seme too with just "yeses"
it's a beautiful dialogue and exchange of words, if you don't confuse who says what,
well written like always from this mangaka-sama
yes! the first "I love you" and "i love you so much" are from the blond and the "But i love you" "i love you very much" are from the black hair guy. They are both easing their doubts and responding to each other. it's so beautiful. it's breathtaking.
I’m sorry, what story is this again?
Boys Love (NAKAMURA Asumiko)
Thats a first for me, its unique, and the fact that he admitted to being scared even when he's with his boy friend is also unique and lovely. But the other guy never replied, when he said i love u all he said was yes. Well that was probably designed to have different meaning to different people.