Many say that the first kiss is the most important kiss in any relationship. To me, that is a tremendous amount of pressure on both parties and would only imply that continued practice, in this case, could not yield improvement. Therefore, the relationship should end immediately.
Of course, that would be complete and utter nonsense in light of the fact that practice, followed by correction, and more practice are known to improve any skill.
Furthermore, as I read recently, it is not the first kiss that makes any relationship for couples do enjoy kissing, but in fact, the first time one of them passes gas. Of course, there is little doubt in this case that gentlemen should go first as it is a more natural and regularly occurring event for them.