您好,根据您的描述,做爱时每次都是半个小时左右,您的情况基本是正常的,可能是刺激不够导致的,增加刺 性生活时一般可以通过阴茎勃起状态来判断阴茎是否到达子宫口。一般来说,在性生活过程中,阴茎勃起后,通 Pornhub gives you limitless totally free porn films with the most well liked adult pornstars. Love the biggest novice porn Group on the web in addition to total-size scenes from your best X... https://b2b27653.blogoscience.com/41215994/the-smart-trick-of-酒店-that-nobody-is-discussing