Only One String Attached

Eijiro's boyfriend abandons him after they find out he's pregnant at 19. His blonde neighbor had offered to take him out to dinner, and spoil him, but Eijiro just feels weird about it, but one day the neighbor asks, and he must say just the right thing, because Eijiro agrees. At dinner, Eijiro can't help but blurt out that he's pregnant, but the alpha doesn't care, just says that he'll make sure they are both taken care of then, but he doesn't want a real relationship. Then smut occurs.
AMAB terminology btw