I personally see it as a song about infidelity. The speaker cannot be selfless, as they are selfish. This translates to acting on impulse only for your own gain. As his girlfriend gives it his all, he still wants more aside from her. More lovers. He can't stay faithful.
I personally see it as a song about infidelity. The speaker cannot be selfless, as they are selfish. This translates to acting on impulse only for your own gain. As his girlfriend gives it his all, he still wants more aside from her. More lovers. He can't stay faithful.