My little sister wants to peg me

Took my sister out to eat, she’s an amazing little sister, I’m 21m, she’s 17f. We had lunch, I had steak she had fajitas, was a nice meal. We went shopping and I got her some new clothes, she really wanted a pinata so I got her one lol. We headed back home, I was gonna drop her off but she said she wanted to come back to my place. I agreed, I was thinking she was gonna have a nap or watch a movie. As we walked through my door she’s like “I wanna fuck you”. I wasn’t expecting that lol, so I shut the door and kissed her, we made out for about 10 minutes, I unzipped her pants and as I’m fingering her she asks “you wanna try anal”. I was surprised lol, no girl has ever asked me that before. She’s like “let’s buy strapons” and I’m like “lets buy strapons” so I go to this sex store, I’m not familiar with them so it’s all new lol. I got her two strapons, red and black, and the big strapon is bright pink. She’s like “buy this” and it’s this big purple dildo, I’m like “I don’t know if that’s gonna fit” and she’s like “buy it anyway”. I get home and we’re able to fuck, I’m just laying back waiting to get pegged. I’m thinking “I love this little girl so much”, it’s so weird to be in love with your little sister. I’m very open to trying new things and I trust her, that’s why I agreed lol. We’ve been sexually active together for almost 2 years. I always have fun with her, she’s attractive, funny and just cool. I’m able to talk to her about anything, we’re best friends. I’m not ashamed or scared to admit I love her. I love her very much. I’m probably gonna take her out tomorrow again, we’ll fuck again lol.