I'm gonna be splitting this up into 2 section so this'll be long sorry about that. For reference purposes my sister is 20 and my cousins is 18 and I'm 18 too but just 5 months older.

I'll start with my sister. Growing up she was older so I always listened to what she told me to do. We always shared the same room together until things happened and we stopped living together a few years ago. Now ik y'all horny fuckers don't care too much about how we grew up so I'll just save you that whole spiel and just let you know that we shared a room together for like 6 years and slept on opposite sides of the room. One night me and her were in bed and it was about 1 or 2 in the morning and everyone was asleep by then. She flat out asks if she can see my "pp" and not knowing it's wrong, I show her. We started to do small things like this where she would show me her ass, ass hole, or pussy and in return I'd show her my dick and this went on for about a year. After not too long it began to become more touchy with me starting to watch porn and seeing lots of stepsister stuff and us not knowing the differences between step and half siblings. We started to touch each other's nether regions. This was about a week of stuff happening and then one night I asked if I touch could touch her pussy with my dick and she said yes. This happened probably more than anything and it was just her squatting over me while I was laying down and me rubbing my dick back and forth until i came. Then one night, she ducked my dick. One night while sleeing on the couch she asked me if I wanted to do the "thing" that night and I decided against it because I didn't feel like it especially in the living room. So she come over and lays next to me and start playing with my dick and stops after I saw to but then, she pulls it out, opens her mouth and starts to suck my dick. I just remember her lips going up and down my dick and feeling her tongue touch my tip. She couldn't go much past the head abs I doubt she can now but the way she sucked my dick has stuck with me through all these years later. It was just so wet and felt so good, until she stopped. After she stopped she said she was too tired to keep going and went to her side of the couch and passed out. I got bored after a while and rubbed my dick against her bare ass, because she was in panties, and her lips. This didn't do it for me but helped because then I went abs watched porn abs to my recollection it was that one Alex Adams and Anatassia Knight step-siblings video. I guess I fell asleep while jerking off because my mom ended up coming out and scaring the shit out of me and said "boy out that away before your sisters see it". I haven't seen my sister much in the last few years but I'm really hoping next time I do that we can just finally take that last step and just have full on sex like I've been wanting this last year.

My cousin. Nothing major ever happened between us besides I think the "normal" saying "show me your privates I show you mine". Well that was until I was visiting them one summer. I never felt a whole deal of attraction to her but puberty did her great and as a teenage boy my mind was horny despite knowing it's wrong because she's my cousin. While I was visiting it was just me and her at home while everyone else was off in the city having fun about an hour away. We started off by making brownies and then decided to watch a movie about like time travel or something and it wasn't all that bad and the ending gave me chills but you don't care about that you just wanna hear what happens next. After brownies were done we decided to go and have one each and then go and get swimsuits on and go swimming because it was summer. She got done before me and so I went up to go put on my swim trunks and i didn't know she was still in the bathroom because it had been like 10 minutes. So I go to change and I open the door and there she is on the toilet just fingering herself. Now out of instinct I just said sorry and quickly shut the door and changed in the other room and headed outside. After messing around for a while in the pool we get tired and just sit there and I look over and down and just see straight nipple hanging out. I want to say I didn't like it but that would be a lie. My dick was so hard I couldn't risk her seeing and said im cold and got out. Once we were done drying off we went inside and that's when she just kissed me. And like it was a long one so I ended up grabbing her ass. I could tell she was turned on because right after there was an obvious wet mark on her bottoms. Saddest part about this is nothing besides this ever happened so we ended up growing up and haven't seen each other since. I'm hoping to see her this summer and try to have some experience with her.