Why the hell does he like looking at this?!?

My ex boyfriend and I were texting this one afternoon, and I think I should say that he was a lot older than me. Like I'm 16 and he's 24. I knew this wasn't smart, but I was so in love with him Iet almost anything pass, including having unprotected sex using the pull out method. I know, DUMB. And after all this, he used me. But I remember him asking me if I minded that he liked looking at other guys penises. I was like WTF!!! That's messed up right?? I'm not crazy right? He swore he was 100% straight and I believe it but eww! And he like wants to have 3 somes with me and see me give head to other guys. But, still loves all the pictures I send him of me and masturbates to them and everything.. Wtf is all this?! I'm kinda confused and disturbed..