Losing my virginity

Okay so I lost my virginity yesterday and I feel horrible it wasn’t with someone that I truly liked it just kinda happened I’m so mad at myself and I feel empty inside and now I have to see him in class on Monday and since he’s not my boyfriend it’s ganna be awkward ugh i don’t know what to do to get over this feeling of guilt and emptiness but the worst part is I feel like I’m attached to him and I didn’t even like him that much before we had sex but now I can’t stop thinking about him. Any advice on what I can do to get over this ?