Nag start pa lang kami mag explore ng gf ko with sex dahil bago pa lang naman kami. It started fine until the last time we did it she found it too tight daw. We did it a couple of times na before this happened pero first time na sobrang sakit na pinatigil niya na ko(not even our first time). What do I do sa ganung moments to help her out sa pain? And what might be the cause kung bakit ganun nangyari.