Should i tell my boyfriend about the old poem about him and hix ex making love?

My boyfriend of 2 1/2 years is wonderful to be and a very talented slam poet. he has written me a lot of love poems and said that he never really wrote any about his ex (his first girlfriend that he dated a year and a half..I'm his 2nd girlfriend). I was decorating a mutual friend of me and my boyfriends house this afternoon for a surprise party and had his itunes on and was looking for music to play. I saw that there were old recorded poems from my boyfriend on there (he must have made a poem cd before I met him and gave one to his friend) I started to listen to them and there was 2 about his ex and specifically making love with her and how wonderful she is bla bla bla. Uggg. It just sorta made me sick and I can't stop thinking about it its just ahhh a horrible feeling. I'm not mad or anything silly like that but I think my boyfriend can tell I'm off. I tell him everything and I am wondering if I should tell him what I heard and sorta get it off my chest. Its especially weird for me becausei can't relate to having an ex. He is my first everything. Please give me some advise and more advise on how to get that poem outa my head!!!