Just had my first hookup and I hate myself for it

I just got back from a hookup that I actually found off of Reddit here, I’ve been seeking for a while cause I wanted to experience things I’ve never have before and after a while I found this girl, whom which is very beautiful actually, especially in person. So we did it in my car, it was really… awkward, having sex with someone you don’t know anything about besides their name and if they have aids or not is hella awkward lmao. But we got used to it and started doing it, I was soft the whole time though, which may be because I was soft nervous, but we made it work, neither of us finished, my mother ended up calling. I am still living with my parents and I live in a Christian household, since I turned of legal age just barley a year ago ofc I’m not fully free, so she saw me on life 360 and called asking what I was doing. May have been the most awkward thing ever. The girl I was doing it with was sitting next to me, both of us naked, as my mom was asking what’s up and asking me to come home. So the girl and I said bye to each other and agreed to just plan better next time. Cause we planned this very last minute and such. So I’m driving home now, I sent a couple texts saying I’m sorry basically, and as I’m driving home I just feel empty. I didn’t fully enjoy what I did, and the more I thought the more empty I felt. I just wasted my first time, on what could’ve been my wife on a girl I just met and may never see again. Whenever I looked for a hookup ever since I turned 18 it always fell short, and just barely, almost like divine intervention. I believe in God, tho I am definitely not the best example when it comes to a believer, and after this it felt like I understood why I should’ve just saved for marriage. Many would disagree which I get, but it doesn’t change how it affected me and how I thought about it. And now from today on with my future lover I have to tell her that us doing it will not be my first time. What I may regret the most about it is that I didn’t have sex out of love, it was out of boredom and horniness. Now i sit in my room thinking about how my decision cost so much yet I’ve gained nothing. And what makes me feel the worst is that if I had a great time, no interruptions, we both finish and we love it. I would have no regrets to what I did, I wouldn’t regret the fact I wasted my first on a hookup in my car. I’m still processing the decision I’ve done, but I’m slowly accepting what I’ve done. And I think from now on I have 0 desire to do anything sexual really. Sorry if you’re reading this, this is a very jumbled mess and I’m just writing what I’m thinking in the moment. What I’m feeling I can’t exactly put on text here. But I regret it so much and I feel so foolish.