I dont think she really went out with guys... Just a made up story, to make Yuuko comes to her, thats it..

Really? You think that Yuuko went ten years without meeting a single one of her best friend's boyfriends. I know I would get suspicions if my best friend never introduced me to his girlfriends.

knowing how Dense she is,
well yeah why not?
she might've avoided meeting with those dudes for 10 years.

Why dense? If your friend is telling you something, do you just naturally assume he is lying for whatever reason? It's not like there aren't drama-free versions of this situation irl.

...No, why would she just, I mean "keep me waiting", she could also just tell her. Jeeeeesuuuuuuuuuuuuus.
if anything happens, we shall never know. sighs