I'm a male in my early- to mid-20's who has recently connected with a female close to my age by finding her on a dating app. She preferred to have conversations on a separate app, popularly used for sending timed photos, so we added each other on there.
I messaged her and introduced myself; I saw her on the dating app, I attend the same college as her, and I'm interested in a casual relationship (friends with benefits). I offered to meet up with her over food/drinks to get to know each other better. She replied by asking for photos of myself. I obliged by sending a couple normal photos, and one where I was only wearing undergarments. They seemed to have drawn a bit of interest from her, she said I was attractive and she wanted me to take off my undergarments.
I decided not to give her too much too soon by playfully asking if she'd care to send a photo of herself, to which she read but did not respond. She does have some teasing videos and photos (pornographic nature) of herself on her profile, but since I sent her photos first, I wanted to see if she would at least send me something back personally.
As far as online identity and digital footprint type of stuff goes, I'm pretty conscientious about it, so I'm not really willing to put explicit photos of myself out there without some form of reciprocating. She has posted non-explicit photos on her profile recently, so I don't have much reason to believe that it may be a fake profile. I seemed to have piqued her interest and would like to hold on to that, without doing anything that may make her feel like I'm trying to extort her or anything along those lines, while protecting myself as well. I intend to pick up the conversation again, and I'd like to do so without causing undue wariness from either side.
How can I communicate with her that I'd still like to explore this connection, in a way that is mutually beneficial, without making the conversation topic too serious?