Attraction is instinct, not about "Love". Yes, one can choose to follow through on any attraction they wish to but most do not choose to do that when it is not likely to go anywhere. Real love requires a lot of work and mutual commitment. Relating to and enjoying another person and working with them and being in their company, etc., even being attracted to them sexually is not "love" that one pursues despite what the other wants or the circumstances dictate. A one-sided "love" of that nature is obsession or stalking.