OK... You need to rephrase your question and really check your grammar because I'm not 100% sure what you're actually asking.
I'll answer what I THINK you're asking...
There's no such thing as a "Loose" woman. Women/Girls that are anxious, not comfortable, or not aroused have an unconscious contraction of the vaginal muscles.
When a girl was molested, this can be a long term issue called Vaginismus.
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► Vaginismus
http://www.vaginismus.com/
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It needs both mental and physical therapy to allow her to even insert a single finger or use tampons, let alone a penis. It also prevents pelvic exams and causes unidentified pelvic pain and pelvic pain during intercourse.
A girl "Feels Tight" when she has sex for the first time not because she's never had sex or because the opening is "Small" but because she's not comfortable, so her muscles contract.
It's been proven that estrogen's effect on the vaginal opening causes it to become elastic and that's the reason why a doctor can tell if a woman is a virgin but can't tell if she isn't...
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► New York Times Is Wrong about the Hymen--But They Are Not Alone
http://www.psychologytoday.com/blog/you-it/200806/new-york-times-is-wrong-about-the-hymen-they-are-not-alone
A 2004 study published in the Archives of Pediatric Adolescent Medicine reported "Subjects who admitted having past intercourse still had non disrupted, intact hymens in 52% of cases." This study of teenage girls found that "the mean width of the hymenal rim was 2.5 mm among the subjects admitting past intercourse and 3.0 mm among the group who denied past intercourse. This difference was not statistically significant..." (Arch Pediatr Adolesc Med. 2004;158:280-285) The difference between the rim on a hymen that is 3.0 mm and 2.5 mm thick is .12 inches versus .1 inches, or 2/100s of an inch difference. Good luck telling which is which with the naked eye!
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The longer you've been with a partner, the more she feels for you, the more comfortable she'll become and the "Looser" she'll feel because she won't have the anxiety causing the vaginal opening to tighten.
Additionally, the more comfortable she gets and the more emotionally attached she gets, the more natural lubrication she'll create and when there's too much wetness, it can cause a loss of sensation for both partners.
On LoveLine, when callers ask about this, the only answer they have is "Be glad she's so turned on and be sure to keep a wash cloth on hand to help mop up some of the excessive fluids."
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► LoveLine
http://www.facebook.com/loveline
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Of course, the individual biology of the woman is important... Some women are larger and some are smaller... It is rare but very possible for there to be a miss match in size... Women find that too big a penis is far far worse than too small because it is possible for a large guy to actually do harm to her if there's an anatomical miss match. He can be too long and hit her cervix, resulting in pretty bad pain or he can be too wide and cause the opening to tear.
Just remember... The vagina evolved to allow a baby to pass through it and snap back to pretty much what it was before pregnancy/birth. I don't care how big a man's penis is, it's never going to be bigger than a baby so any "Difficulties" are the result of psychological issues, lubrication issues, physical disorders, or medication.