Do you like to swallow?

So me and my bf have been going out for 7 months ongoing 8 and he's the one I lost my virginity to. He's been teaching me what to do and all those other stuffs. Anyways, he likes it when I give him head so whenever I'm on my period or not I give it him (sometimes when he's asleep), and whenever he's about to ejaculate I swallow. Didn't like it at first but I got used to it (he's a smoker so the taste was kinda bitter). Sooo I've done some research about it and says that diet effects the taste.