boyfriend has a porn addiction

Emily
my boyfriend and I have been dating for about a year and a third. I'm 17, he's 18, we're both in high school. the other day, he confided to me that the porn addiction he had told me about earlier in our relationship never actually went away. he said he couldn't stop himself from feeling the urge to just...watch porn. it's been that way for 8 years, he said. i expressed that it made me uneasy and insecure, because we have a sexual relationship and I have body image issues. I would prefer it if he didn't watch it, because it makes me feel insignificant and bad about myself. I myself don't feel the need or even the want to watch porn since we started having sex about a year ago, and I don't understand why he doesn't feel the same way. shouldn't other people having sex be unappealing when you have an emotional and sexual bond with someone? maybe it's just me. but I'm incredibly insecure about this and I could really use some help. (for some background, he'd told me that he's incredibly embarrassed of this issue and has never confided in anyone else before. he has so many other issues going on in his life that he can't put that as a priority right now and i don't know if I should stay in this relationship. I just love him so much, what do I do?)