I suggest a new symbol, natures master of flight the "Hummingbird".
Sex comes at a cost you see. When a man spots a fine fertile lady young lady whom he wishes to court and shag then there is expenses. Valentines day is built around the cost of sex. Flowers, Dinner, Chocolate, time etc. Are spent in the process. Many men will claim that they wish to date a woman for the companionship and friendship, I say shut the fuck up. We have friendship with our families and friends. Companionship can be got from a pet goldfish. The ultimate goal of our subconscious is reproduction with the best genes we can whether we deny it or not. We find companionship with our lovers as a by-product of our sexual attraction to them.
The hummingbird symbolizes the cost of sex. Its place in nature is to pollinate ornithophilous flowers.
Some flowers have evolved to various shades of red, orange, and bright pink. This narrow color spectrum may render hummingbird-pollinated flowers relatively inconspicuous to most insects, thereby reducing nectar robbing. The flowers rely on the Hummingbird for sex to occur and so they have co-evolved. Hummingbirds are the middle-man in the sex of flowers, what brings two flowers together to get freaky and so would make a better symbol for our "middle man" of romance.
Of course society has got its many ways to bypass our old fashioned "middle man", for example Fling.com, tequila etc.....