Without knowing anything about them other than what they look like and how their body language is depicted in the two pics, yes they could make a cute couple. There a whole lot of other things that go into makIng a "cute couple". The "dynamics" of the relationship how the couple acts towards each other are one of the biggest factors that make any couple cute. Just because two people are attractive together doesn't mean anything unless there is chemistry between them.
I mean I dont know How they are if They have similar interest or if their personalities fit but I think They look super cute They look a little alike, like a brother and a sister look alike I think thats cute