You go for it.

You shrug at her and say; "why not". She squeals in excitement and says; " where do want to do it? My bed sheets still haven't been cleaned so I don't want to do it there." You look up at the moon that is glowing a gentle bluish white and ask; " how about right here?" She responds; "ok" and grabs what appears to be a rather large roll of fabric and begins rolling out on the floor. It was a very large towel about big enough for three people to sleep on. Out of curiosity You ask; " why did buy that and how did you fit that in there?" Her response was; " I bought this so we could have sex anywhere and besides I rather get this dirty than my bed sheets. Point was taken. She slipped out of her suit and laid out on the towel. You followed her example and as you do you look over to see she already had the lube and the dildo with her. Once stripped you got down on the towel. She handed you the dildo and said; " here get this and yourself lubed up." You did as she said while she lubed up her asshole. You were ready relatively quick and you asked if she was ready. She said; " no, not quite" and you could tell she had never been penetrated and couldn't help but notice that she was taking her time trying to make sure she was relaxed as she already had two fingers in. You felt a little annoyed by this considering your first time. She finally finished and grabbed the dildo and pressed it in. She took her time but once she got it in she did not go easy on herself. She made sure to get her half in her and then as you moved forward towards her she inserted your half in for you. You slid forward making sure to meet her in the middle. Your ass was touching hers as was your and her balls. The two of you began to grind on the dildo together. It was quite nice to share. She reached her hand out and stroked both of your cocks together. She eventually let go and said; " I know we haven't known each other for very long but I want you to know that I love you." Hearing this made your heart skip a beat and got you more excited. She stopped her grinding and pulls of the dildo and pulls it out of you. She gets on all fours and inserts your half in to herself and then wiggles her butt at you. You get what she wanting you to do. so you get on all fours yourself and slide your ass onto the dildo until you touch your ass to hers again. She reaches her arm behind her and you reach yours out as your hands interlock with each other. You both start sliding from each other and then back in slamming your butts together. You go further distances than she does but you both work together to achieve your goal in what you would have to call teamwork. You get close but that's when she lets go of your hand and slides off the dildo. You look back at her to she has her butt raised up into the air and she says; " come fill me". You pull the dildo out and crawl over to her and you slide the dildo in but then she starts wiggling her butt at you and says; " no, I mean with you". You feel a little unsure and ask; " I thought you were supposed to be the dominant one?" She replies with; " well of course I am. That is why I'm telling you to stick your dick in me." You nod and obey as you get up behind her and stick your cock inside her. It felt good. It was tight and you now knew what it must've felt like for her when she was on top. You started to thrust and you pounded her for a short while but you didn't last long and shot your load in her while she didn't get to. You stayed there for a while until you were interrupted by her voice saying; " ok, you can pull out now. It's my turn". You obeyed again and laid on your back as she got between your legs and shoved her cock into you. She didn't go slow she just railed you and as she did you couldn't help but feel that you liked being on bottom more. She certainly had more stamina than you did because it took her about 10 minutes to cum inside you which was followed by you cumming again. After she started cumming she continued to thrust for a while until she wasn't spurting cum any more then she pulled out and as she did you could feel some of her cum dripping out of your gaped hole until you contracted it keeping the rest in. She laid down beside you and cuddled up to you as she continued to stroke her softening cum covered cock.