For me, 'love' encompasses many things. Unfortunately, people too often reduce 'love' to "just a euphoric feeling felt initially which disappears over time" (sorry chipp, I'll use you as an example). This is the only brand of romantic 'love' sold to us by Hollywood, media, and the like. I feel that such portrayals of love fuel people's unrealistic expectations of what it means to love and be loved because, as chipp has pointed out, this initial feeling does fade.
Romantic love, however, is dynamic. It encompasses self-giving, mutual respect, trust and a willingness to continue loving. Yes, I am of the opinion that 'love', in addition to being an emotion we feel, is also a choice. It's a choice to share one's life with another. Stan Walker's song, "Choose you" perfectly illustrates 'love' in this light.
For this reason, I believe that in working relationships everything should be based on love. It should not be expressed sparingly. Instead, it should influence our every action, and it need not be expressed through some grand gesture. For me, helping to wash up after dinner, giving a back rub and saying 'thank you' are all expressions of love.
This is the kind of love we need.