foul out
To be the last person romantically involved with someone before they "come out of the closet". As "striking out" is to be shut down, and happens quite often; fouling out, or turning someone homosexual is far less frequent, just as in baseball.
"Did you hear that Stephen is gay?"
"That means Melissa fouled out twice!"
"That means Melissa fouled out twice!"
Fouled out
Incorrigible behavior or actions
Your fouled out