In regards to how a man tastes during ?

I gave my boyfriend a bIowjob today [first time I ever did it! >..< Or make it more bearable? I like doing it for him. D: Especially since I'd feel bad if he did it for me and I couldn't give him anything, as much as I wanted to. I don't want to have to stop every once in a while because I feel gag-ish. Help please? =[