I used to have the same thing happen over and over again with a new partner as if I was allergic to them.
Please make sure you are using condoms and birth control.
The best thing to do it treat the yeast infection and stay with the same partner.
I had chronic yeast infections with my present boyfriend but now nothing and its been a year and a half
I used to get yeast infections every time I had intercourse. The only way I was able to stop this from happening was by douching with a vinegar and water rinse right after having sex. It was a major inconvenience but it definitely stopped the ongoing yeast infections. And on those occasions when I was too "lazy" or "relaxed" to get up and douche, the infection would return without fail. A vinegar douche really does help, but it is a major "mood disrupter." (Always there are trade-offs...) Also, I wasn't having sex every night so don't know if vinegar could eventually cause its own set of problems if it was used too frequently.