Why not

Well, to be honest, I don't fully understand the question... But based on the pic, I presume you're referring to same gender couples. I don't know if MLP touches this topic at all, the original canon certainly does not, but there are countless fan-made shippings out there. I don't ship myself (the only exceptions are CelestiaXDiscord and DerpyXDr. Whooves), but I don't have a problem with it as long as it stays out of the original canon.

^ I don't ship ether.. Though my popular story 'I was here first'.. I a bit of a Spike/Rarity ship.. Tout the story is ment as, mostly humorish. And somewhat based on a real life expirence

no it is not about the same gender coupoles and i mean that should mlp show to us that fillys(other genders) can love too

I don't understand this. Do you mean can characters from My Little Pony fall in love too? I'm saying yes.