my boyfriend thinks he is addicted to sex

see my boyfriend thinks he is addicted to sex because he looks at a girl on IG and u know says he would fuck her nothing else just that see he is in the air Force he is 19 years old its been 4 months without sex for him I think it just his hormones he has been watching porn since he was 11 could porn be doing this to him??but he says he loves me and he wants to protect me and only wants me tell me what you think