And then she kills herself/goes insane the second she even sees her somepony talking to another mare, and he gets belittled nightly for looking at other mares. Oh, and the relationship can work out if you spend every waking and or unconscious second of your life being within arms reach of pinkie, never talk to other mares, and spend your entire existence catering to her grievous emotional needs.
Tl;DR ya, she needs a boyfriend, or for her friends to stop fucking ditching her when someone who bests her in her only talent shows up, and then mocks her partys, that is really the only thing she does.
Tl;DR Part II:get ridda RD and have the rest not ditch her, and she's fine.