I just found out...

:OOO
How DARE he possibly cheat on your fictional relationship!!

Be happy he's happy.

Maybe u should let it go and stop thinking about him. in ur imaginary world, u should just slap him a lot and say, "dont worry, you'll get over me"
try to find an anime/tv Показать crush. they r a lot easier to dream about and u dont have to worry about them finding a mate unless they r in a romance anime/tv show. so there. it might not be easy, but u should learn to let things go. even if they involve someone u'd die for.
sorry if this doesnt help (its all i got)
but not all people r as nice as they seem

KILL HIM

Just remember that it is еще likely Ты will be in a fatal car crash than ever having a romantic relationship with him.

I know how Ты feel. :'(

In your imaginary life, kill his supposed gf and then threaten to break it off with him XD

An hero.

Ehh, try being mature and finding out what kind of person she actually is instead of being jealous.

Ты want to how to make it stop? Realize Ты can't дата him. I know that's your fictional boyfriend but what else are Ты going to do? Be happy he's happy and stop stressing because that will go nowhere unfortunately.

Make him jealous~

Get cuddly with his Друзья and he will come crawling back to Ты and your fictional relationship~

:D

...I'll share my Jon Foreman with you...
(Seriously, that's Jon Foreman.)

*GASP!*

OMG, SERIOUSLY? HE'S CHEATING ON YOU?! HE'S CHEATING ON Ты AND BREAKING YOUR IMAGINARY RELATIONSHIP? OMG!!! THAT SON OF A WITCH! HE THINKS THAT JUST BECAUSE YOUR IMAGINATION IS IMAGINARY IT MEANS HE CAN CHEAT ON YOU???!!!

KILL THEM! KILL THEM BOTH NOW, THEY DESERVE IT!