By flirting with them heavily, and then if needed, by telling them lol

Oh, trust me, you'll know if I'm interested in you with out a doubt~ ;)

Well, usually I flirt with them a lot and show them tons of affection~

I take good care of them and always make sure to tell them my appreciation ^^

Well, I gave Seika a bouquet of roses and told her I love her...

To be honest I was pretty terrible at it, I tried to tell him in a creative way I liked him but it just kept going wrong, thankfully Io seemed to understand what I wanted anyway~

Flirt with them I guess

I let them know~

I don't, really. I don't have time for that.

My flirting works good for that.

I don't play games, I just tell them I like them.

Uh well... I'm really nice to them? And I give them lots of hugs?

Just tell them? I'm not very good at being subtle... ;_;

I just tell them

Uh... Well I do nice things for them and treat them well?