My ex-wife was the only one that I ever got to swallow (once) and she immediately jumped up and ran to the bathroom. Didn't really surprise me since she was a bit of a prude, she also wouldn't kiss me or go down on me if anything had just recently had pussy juice on it lol . Kissing after getting head never bothered me and I'm pretty sure I wouldn't have a problem kissing a girl that had just swallowed.
Sounds like you haven't had much luck!