Paradox

In "February" by Margaret Atwood, a paradox adds an effect to the poem. The paradox is "it's love that does us in." This paradox means that we are overpopulating because we are "loving" to much. The phrase adds to the effect that we can control our destinies, but we are headed for trouble. The speaker is so passionate that she requests castration. I do not understand how this paradox relates to February though. It may be that it is in February when she sees the cat reproduce. This reminds her of the growing population which she has a very strong opinion on.