Of course there will always be that dense of attraction towards a member of the opposite sex but ultimately they are still humans and an intimate relationship is still a relationship and should be treated as such, but yes overall this is a pretty good way to view the opposite sex.
Your title depends on what your text and reasons are specifically about and what the information you are given is, however I would choose whichever one fits your information the best. However, they all are talking about bicycles. I would most likely choose the health benefits of bicycling.