Yeh ho sakta hai ki wahan ke muscles thode khul jaaye, jo ki bada hone ka ehsaas deyta hai. yeh uamr ke saath bhi ho sakta hai, sirf sex se ho yeh zaroori nahin. Lekin yadi aap virginity ke bare mein soch ke ghabra rahi hain toh yeh samjhiye zara ki Kaumarya ka poora daromadaar hymen ya jhilli se juda hua hai. Yaad rakhiye ki yeh bahut hee asani se toot saktee hai, jese cycling, horse riding ya khel-kud ke duran. isliye jab tak mahila khud nahi batyegi ki woh pehli baar hi sex kar rahi hain woh is baat ka pata nahi laga saktaye.Apnay mann se doubt clear kijiye aur yeh padhiye: http://lovematters.in/hi/resource/faqs-hymen-and-virginity