Perhaps the pursuit of love does not maximize happiness per se, but on introspection, I find I value love for its own sake; that I value the part of me that needs love, and would not change it even if I could.

Were I able, however, I believe I would modify my pair-bonding circuitry so that a bond could easily be dissolved when the person in question is no longer bonded to me. I do not really think such a change would alter what it is to love another, and it would fix...an unfortunate bug which currently exists.