Eva is the North Wind equivalence of the Penguins Kowalski. Kowalski had a crush on her the moment he met her after she saved their lives. He tries hitting on her every time. One time, he tells her that they should kiss, but Eva just looks at him coldly.
At first, Eva doesn't return affections towards Kowalski. However, it is revealed she had a secret crush on him the same time he did. She kisses him on the beak lips, thus she indicated she liked him back