Unrequited friendship means always having to say you’re sorry.

Is it unethical to encourage another's approach in the sole belief that they may one day be of use to you? Is it worth it to re-spawn that which is dead for the pre-emptive hope of a later convenience? Is mutual manipulation equally beneficial or equally detrimental to both parties involved? Should I allow circumstances to unfold whilst my intentions watch cautiously from behind a fourth wall, ready to strike as soon as the tainted curse of a repeating history rears its ugly head?

Can the excuse of a well-planned retaliation work as a safety net if ever I am once again presented with the choice?

Should I not give this choice an opportunity to present itself?