Wiktionary
save oneself
vb. (context idiomatic figuratively English) To refrain from having sex until one meets a suitable person to date or betroth or marry
Usage examples of "save oneself".
It took a lot of play at the highest levels, plus ongoing practice and analysis, to keep one's game sharp, to save oneself from a suicidal lapse at the table, to have one's mind so tuned to chess that one could instantly disregard time-wasting possibilities on the board and move into the flow of potential moves that bore with them some hope of gaining an advantage.