Feeling Guilty

So, I had basically never done anything with a guy. I kissed one guy one time like a year ago but nothing other than that. Since I've gotten to college I've been using both bumble and tinder (never meeting anyone until yesterday) I made plans to meet this guy specifically to makeout, no plans to ever date or anything like that. I'm being awkward and he's being nice so we begin to makeout and eventually my shirt is off, he's doing his thing kissing my boobs... and his hand is resting on my inner thigh that kind of thing. In the moment I genuinely enjoyed every second of it but afterwards I couldn't think anything other than like that was slutty and feeling guilty, and I don't even know why.