So my kirlia is at that age when he has started noticing girls but he doesnt seem to like any of the females from his egg group. Would it be a bad idea to introduce him to pokemon outside his egg group since he can’t breed with them or do you think he would not care

It’s certainly worth exploration, anonymous. Whereas allowing a pokémon to romance a human or vice versa tends to be a taboo, there are really no social qualms against allowing a pokémon to romance something not within its own egg group. So long as your kirlia understands that breeding would be impossible and that it’s imperative for him to engage in safe practices when mating, he should be fine.