I have a stepbrother and I'm kinda attractive in my opinion and he's being really nice to me and I can tell he's flirting with me and my dad definitely noticed but I haven't talked to him about it yet.

First of all, I'm not in high school anymore. I'm 24 I think, not sure. I have two older sisters and a mom and dad and they're all under the same roof again, which means I'm the only one at college.<br><br>My older sister had a baby, which is the reason they moved back in to our old house. My younger sister left in her late 20s and moved across the country to study medical school. <br><br>My parents have been married happily for over 25 years. My mom is from the Philippines. I have no idea how my dad met my mom, but it all worked out. My dad is a middle manager in some big Nordic company, and he makes really good money for middle management. <br><br>So I moved back in too, due to financial reasons and also because mom and dad have been stressed out with my older sister's baby.<br><br>So back to my stepbrother. He's not my real brother, but he is my younger sister's son. My younger sister is being irresponsible and her baby daddy wants nothing to do with her. She's been dating him on and off and they've been having a hard time in their relationship, so my sister's using our old house as a temporary shelter for her and her baby.<br><br>The stepbrother's around 3 years old. He's a cute kid, I mean, I love him, and I can tell that he loves me too. He's a mama's boy and I can tell that he's not my son because he's not as clingy or attached to me as I would like him to be.<br><br>So the other day, we were playing at the park. We spent most the day at the park because it's where I get most of my exercise. It's a nice park, it has a playground for the kids, and a middle-sized dog park for the dogs, and then a few grass fields and walking trails.<br><br>So they were sitting and playing at the playground, and I was walking with my stepbrother and the baby and just enjoying out in the sun. He was riding a tricycle while I was walking, and then one of the kids started playing tag with us and we all started running. I don't know why but I tripped and fell and I landed pretty hard on my back. <br><br>I was in pain and I didn't know what to do so I figured I just had to wait it out and hope it went away. So I'm just out here writhing in pain, I'm not in tears but I'm in agony, and I see this mom rush over and starts talking to me. I don't remember what she said, but she was talking to me and then she's in front of me out of nowhere and she's giving me a hug and telling me she's sorry. <br><br>I didn't even know what was going on. I didn't even know that this woman was my stepbrother's mom. I just thought of her as some random person who was being nice to me. But later that day I asked my dad who she was and he said she was my stepbrother's mom. <br><br>I don't know what to say because I'm attractive and I can tell that she's flirting with me, and I just don't know what to do. She's being extremely nice to me, and I have to admit that I've been flirting back with her a bit. I know it's wrong but I really want to fuck her out of curiosity more than anything.<br><br>What should I do?