It’s easy to want something for yourself when others want it too(for you), specially when it’s someone you like/love.
It’s easy to want happiness when someone is the imposible embodiment of it.  
Maybe that’s why romantic novels/songs/poems/movies are so praised nowadays. Because  having someone who is everything for you and that makes you feel you are nothing without them incentives you to reach happiness. It’s easy to be happy when you are not alone.
BUT, as Tyler Joseph once said:
“We all must learn to be happy with being alone; that’s when things begin to change”
So stop looking for them, because when they are gone what will be left of you?
You can and WILL be happy with yourself, and(as every thing that’s hard to achieve) I promise it will be worth it.