boyfriend kissing with coldsore

My boyfriend (17) had a coldsore when i came over last week and he tried kissing me so i pulled away and told him i didn’t want to get a coldsore from him. he got sad and upset about it and acted distant towards me for a little bit while i was there. and a few weeks prior to this situation i had a coldsore when i came over and he tried kissing me so i pulled away and told him i didn’t want to give him one. he still kept trying, saying “i don’t care, i get them all the time, just kiss me” i kept pulling away anyways and told him no until he grabbed my face and kissed me.