Younger brother with no luck with the girls. Asks his older sister for help.
Seem to recall an incest theme.
Younger brother with no luck with the girls. Asks his older sister for help.
Seem to recall an incest theme.
If you have a little more info, even one small specific detail will help. Your current information matches way too many stories.
First one that springs to mind for me is Gina Marie Wylie's Spitfire and Messerschmitt. Boy didn't have much luck but mainly because he wasn't trying; gets some coaching and advice from his big sister, gets girlfriend who's new to the area and also a baseball player, becomes target of terrorist attacks. Was unfinished for years, but I feel the mods done in the rewrite for completion lost something besides the bulk of the incest elements.
Did he blackmail her into helping? Or was there a MC element? I'm pretty sure I've read a few of each of those types...
As I recall, she volunteered to help him because she felt he was too clueless about girls to do it on his own.