Boyfriend sterile by varicocele?

my boyfriend of 1 year and 5 months and i have had unprotected sex for about a year and 3 months now, i have not gotten pregnant. he told me a looong time ago that he was 'sterile' because of a varicosele problem. he said he found out around the age of 14 at a school athletics physical i believe, so i am assuming it wasnt casuing him and pain or discomfort, otherwise i would thing he would have gone to a doctore about it. i do not know much more than that about it, other that a doctor told him if he didnt get it corrected within 5 years ( i think) he would go sterile. he is 22 now, so its been roughly 8 years, give or take. he said he had a second opionin on it, when he discovered it, same diagnosis. but i am not so sure that he acutally had it looked at again, because he never had a sonogram to comfirm he even had a varicosele. he has tried to show me where it was, but i honestly cant tell a difference between IT and his testis! we are in the military and i spoke with a doctor here about it. and she says is still may be treatable. and that he could get it removed for free, i explained to him this, and he says the damage is done, its not hurting him anymore and he has accepted that and refuses to get it looked at or even talk to the doctors here about it. and doesnt even like to talk to me about it because its heard to talk about for him. as it is me. but i would like children, and i know he wants kis of his own also. i dont understand why he doesnt want to get it corrected! i dont know if this is why i havent gotten pregant. i tried to get pregnant by my ex a few years ago. he has no fertility problems, i didnt with him, maybe i am the problem? or both of us? it is just upsetting that all my friends are getting pregant without even trying, or just by complete accident or stupidity and here we are, not necessarily trying, but not, NOT trying. and its not happening. it is really hurting me, and i do not understand this varicosele thing why i might be the one with the problem, anybody have insight on this? or has anyone been told that they would get sterile if left untreated, and then had children later in life?

can anybody tell me if varicosele is correctble after years of damage?

please and thanks!!!