[bambo]

Recently, i keep having the eagerness to see my GF sis naked infront of me and we are having some sexual activities.
She is elder than us by 3 years. Not really good looking, but the thought of it keep coming. These few weeks i keep thinking about it and it always make my bro hard without fail.
Soon i might have a chance to stay at my gf place. As her parents is away, it left with the 3 of us. Evil thought keep coming to me and plan something to make it happen. Is there something wrong with me?

Usually i will walk around without my underwear, just top and bottom. My gf knows i always sleep without it. Should i do the same over at their place?