Long story short for this part, my parents were separated from each other when I was conceived, she told him I wasn’t his and had to leave town and when he came looking for her she was gone. This being the late 90s no Facebook or internet to find people easy and my father wasn’t tech savvy. So door knocking was his only option. Unsuccessful as he was. Fast forward 21 years of my life, my mother comes across his account, adds him and meets up ect, the got married and I was then introduced to my new siblings (1 younger brother, 2 slightly younger sisters, one barely 2 months younger female and a 1 year older female) I’ve only met them a few times in the last 2-3 years now. One of my sisters my father found out wasn’t actually his, and I can’t remember what one it is. I’ve never grown up with any of them in my 24 years of living and have made no sort of family/sibling bond with them as I was already so closed off to a lot of my family for many reasons and was hesitant to let them in. The thing is my new sisters are all attractive, very. And that’s the problem, I don’t view them as family cause I don’t know how to flip that switch on people I’ve been related to but never knew or grew up around for 24 years opposed to one’s I was, I have other good looking family members but because I have that bond they’re not even in the realm of attractive to me in any way, like in a way that thinking these things about them makes me kinda sick in the gut. But my new sisters is a different story, I view them like do any other woman outside of my family, and I find them rather sexually attractive. I am rather attracted to pregnant women, and the one sister I find the most attractive is rather pregnant. I think about my couple months younger than me sister often, like having a 3some with her when I was with my ex, her giving me head and all sorts. But my pregnant sister I think about a lot and I really want her to give me head she so attractive, amazing ass, nice plump pregnancy breasts, and an amazing looking baby bump and hips. Past couple days I’ve been visiting for Xmas and the urge to ask her for head brews in my head. We cross paths a lot through the house, and I can’t Stop catching myself staring directly at her ass when she’s walking around, often wearing something I can see her underwear or underwear lines, and whenever we make eye contact we give each other the same smile/look of saying “hey, how’s it going” like I would with other women I find attractive but to shy to actually talk too, we’ve barely spoken to each other but that’s because I’m shy around her. I know she somewhat finds me attractive and sometimes she deliberately will come into the lounge for “no reason” and aimlessly “look” for something maybe to see if I’m checking her out too idk. I just don’t feel wrong thinking about these desires about her and idk if that’s bad or not. Would getting head from her really be that bad? I mean I’m not emotionally connected to her as a sibling and we’d never procreate, she’s only half sister and or not my real sister, an the seductive smiles are driving me nuts.