How Does Love Grow?

How does love grow? Does that make a friend from a foe? Or does that make a friend a lover? Tell me now, don't let me wait any longer A guy gives me this pillow Another guy gives me flowers I don't know what I feel for them It's not love I think, it does not grow My friend before, my lover after We shared the tears, wee shared the laughter We used to be together always But then we parted ways We were enemies, mortal enemies We fight and fight in series Now we're the best of friends We're together in every trends Now, which of those best explains it? Give me a hint Which of them is the answer? Tell me now, don't let me wait any longer.