Women love devoted men

This is partially true. Although a loyal man is very fine to have, this loyal man is no challange at all. Unfaithful men although seen as negative influence in the society, women see them as trophies. 

If I were to ask you, which one would you choose, a restaurant with small number of visitors, or a restaurant with numerous visitors coming along?

The more women a man has, the more attractive he becomes. When a woman sees a man without any woman, she sees him as a needy guy, a man with no choice, a poor man, a loser. Those negative traits tend to make a woman or a lady turned off.