My boyfriend doesn't want to have sex
So, Ive been dating my boyfriend for about 1 1/2 years and we started having sex about 4 months ago. I was a virgin so having sex was a very big deal for me. We just got back from a month vacation and at first we were all over each other the first couple days but now we haven't had sex for 5 days. He was giving me oral the other night and when I asked to have sex he tried to avoid the topic. I brought it up with him later that night and he said that he feels like its like a job now. He feels like I always want to have sex and sometimes he just isn't in the mood. He said that he feels like a loser not feeling likeh aving sex and it makes him less of a man and that he's letting me down. He told me not to take it personally but its really hard not to take it personally. What should I do?