HI Thanks for posting your query. Minor bleeding do happens when a virgin girl have sex first time , but this bleeding may be very little to come into notice and hence no blood may be visible outside . Moreover bleeding happens due to rupture of Hymen , in some girls this hymen will be very thin and can break off after any exertional activity like horse riding or cycling etc. In that case , if the hymen is already broken then there will be no bleeding even though the girl is virgin . Hope this information was useful to you. Show this information to your man. Any further clarifications feel free to ask. Regards.