They are in love with each other.
The look like a cute couple.
Just because they are in love doesn't mean they are a couple.
exists p1 x1.(n_thing(x1) & all x3.(n_other(x3) -> with(p1,x3)) & exists x2.(in(x1,x2) & n_love(x2)))
exists s1 x1 x2.(n_look(x1) & a_topic(x1) & like(x1,x2) & n_couple(x2) & a_cute(s1) & Theme(s1,x2))