is there a word to describe people who do stuff just to get compliments from others?

[JohnTheCanuck]

A Narcissist meaning everything is me, me, me, and they'll always talk about them self, and what they've done that's so great, but never listen to what you have to say.

Arrogant, meaning they think they're the best person ever, and think they're great at everything. Like they're a king, and they're above everyone.

But your gay friend might just be insecure about being gay, so he/she seeks peoples approval and compliments as a way to reassure and convince themself that they are liked, and accepted, and people don't think they're as bad as they think of themself.