Great advice so far! I'd just like to add that it sounds like you are both concerned with pleasing the other. WIth that attitude, and some patience, you'll get all this worked out. Also, if she is giving head, she might try holding your head right in front of her mouth when you cum so nothing is in her mouth [i]except[i/] your cum... (assuming that is the issue with her gagging.)

Good luck and have fun!

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