is there any yaois where they grow old together??

Here you go (≧∀≦) I only have 3 on my list
http://www.mangago.me/home/mangalist/241435/

http://www.mangago.me/read-manga/complex_manda_ringo/

http://www.mangago.me/read-manga/life_senjou_no_bokura/

NO STOP THAT'S SAD!

BAD YOUNG EDUCATION
YOUNG GOOD BOYFRIEND

Nah, it has a happy ending...just read it to the end it's adorable!


Spoiler
They grow old together, die a few years apart and are reborn/reincarnated to two moms who are besties.