Go for it.

Screwing up your confidence you lean forward and poke your tongue out, gently licking Kim's asshole. Kim gives a start and laughs “I guess it's true what they say about the quiet ones. You dirty girl.” with that she shifts down to give you easy access to her back door laughing at the unusual sensation. With better access you place your lips on her pucker and kiss gently sucking as you french kiss her. The nasty taste you expected isn't there, instead she just tastes vaguely of soap and sweat. Pointing your tongue you poke against her sphincter penetrating and stretching her open. Your loving attention on her asshole has Kim Moaning and shaking above you. Seeing the pleasure you are giving to this sexy girl is quite a turn on, you feel your pussy start to juice again and you reach down to rub your little button, adding your muffled moans to the lewd slurping sound you are making.

Just as you are getting a rhythm going and feel your orgasm coming on Kim stuffens and lets out a little scream. Meanwhile her asshole and pussy begin to shudder with pleasure. As Kim collapses onto you your hand gets trapped and you can't maintain enough pressure, frustrated you feel your rising orgasm evaporate, leaving you **** for release.

Helping Kim into a more natural position laying beside you, you massage her stiff legs as she slowly recovers from the ordeal you put her through.

A couple of hours of cuddling and pillow talk later Kim leads you into her ensuite bathroom and you shower together, sharing teasing touches and gentle kisses as you help each other to clean your sweaty, sticky bodies. After the shower kim gets out the wax pot and a razor and proceeds to remove all your hair below the neck, only leaving a small landing strip. “Normally I like my girls to be completely bald” she explains “But for you I think we need to make an exception. You're ginger and we have to be able to prove that the carpet matches the drapes.”

Kim lends you a silk robe to go out to breakfast in. It probably fits her well but on you it barely reaches to the bottom of your ass. As you walk out into the living area you see your new brother David sprawled on the couch in his work uniform completely absorbed by the game he is playing on the giant tv. “You left your whoring clothes right in the doorway again.” he spits at Kim without even looking up. “They're Amy’s clothes and you forgot the fucking aircon again.” Kim snaps back. “Don't worry about him.” Kim says to you “He’s just pissed that Katie won't let him have a go.”

You are spared having to get between these feuding siblings as Kim grabs you by the hand and pulls you into the kitchen. You get to work helping her make breakfast. An hour later you are nursing the last of your coffee when you hear a knock on the door. Kim is busy stacking the dishwasher and David didn't even look up so you head to the front door and open up.

A giant of a guy is standing at the door. About mid twenties tall and broad shouldered with tanned skin and long dirty blond hair pulled back into a loose ponytail. You find yourself a bit lost in his vivid green eyes but after a moment you realize that neither of you have spoken and you are just staring at each other with desire on both your faces. Blushing you look away and ask if you can help him. “You must be Amy.” he replies “I'm Shane. Is Kim here?” with a start you realise you have been staring at the huge bulge in his shorts and look away, blushing even redder.

As you lead him into the kitchen, you are very aware of his eyes on your back, and that the robe that is your only piece of clothing is giving him little glimpses of the bottom of your ass as you take every step.

As you enter the kitchen you see Kim leaning against the counter with a knowing look on her face. “Hey Shane.” she purrs “What's up?”

“I'm having a barbie for Australia day at my place. Figured you guys might want to come over.” Shane replies. “Sure, you wanna Come over Amy?” Kim replies putting a strange emphasis on the word come. Blushing you say that sounds like fun whilst secretly wondering what a barbie is.

With that Shane says goodbye and you walk him back to the front door. Kim comes up behind you and wraps her arms around your waist. “You have to fuck him.” she whispers in your ear “I'm surprised he didn't just jump you right here on the doorstep.” unsure of where you stand with Kim after this morning you mumble something and start picking up bags of clothes that are still strewn around the hall. “Come on Amy. If a guy was eyehumping me that hard I would definitely go for it. And a stud like Shane. If I wasn't worried his cock would tear me in two I would have fucked him years ago.”

You try to explain that you don't really want a boyfriend right now and she laughs “I said you should fuck him not go ring shopping.” you just aren't sure, you always thought of yourself as a relationship girl and not counting Kim you had only every been with your ex boyfriend. Do you have the guts to have a casual hookup?