swallowing

Banny

everytime im with my guy and im going down on him .he always be asking me to swallow but i always say no and he ends up finishing by himself and i feel like that turn him off from me denying him and i feel bad,but i decide i want to swallow next time i see him ,but i dont know what his cum tasts like ,how it feels going down your throat or what happens after can someone help a girl out and tell me what to expect