Im in a serious relation bf has had prevsly 4-5 tyms bt wd prostitutes whn he ws young how shud i tak ths?

i knw he ws young and hes been honest abt it ...but i dnt knw why this fact is bothering so much..hes never been in any emotional relation previously,lyk me...guess i didnt expect him to be ually active at such a young age so it ws a shock hearing tht he did it only for ual gratification