@@ -11,0 +12 @@
+<xref type="see" seq="1040870">キープ・5</xref>

* http://zokugo-dict.com/07ki/keepkun.htm: キープ君とは、女性が予備の結婚希望相手という対象で考えている男性。
* https://ja.wikipedia.org/wiki/アッシーくん#キープくん
* 現代用語の基礎知識: 遊び相手としてはつまらないが、まあ無難で結婚相手または候補者の１人として取っておく男友だちのこと。
* Many English results for "backup partner"

キープ君　 1,978 72.9%
キープくん   736 27.1%

We have this at 「キープ」 as "5. person one is dating while hoping for someone better", but I think it's a bit off. The emphasis is more on the fact that the woman has a prospect she's serious about, but she's stringing along keep-kun on the chance that the other guy doesn't work out.