@Mizuki: Gotta say, for a post fraught with condescending and assumptive remarks, the metaphors were quite vivid.
While I don’t doubt the experiences of your friends, I can cite just as many friends who are happily married to their “first” and friends who have suffered horrible divorces after much field playing. I don’t see it as relevant personally.
What is relevant is your commitment to the other person (who is, ideally, your best friend), your respect for each other, and your willingness to be adventuress and open minded in the bedroom.
Whether they are your first or fortieth shouldn’t matter (although after a certain amount of traffic, it must be like throwing a hotdog down a hallway; but I digress)
I assure you, I am anything but “miniature” in the sack (or anywhere else for that matter).