Why would a guy ignore me after having a sexual encounter with me?

My guyfriend won't even respond to my texts anymore after i gave him head. we texted two days after that day but then he ignored me the rest of the week like i dont even exist. and here's the thing i have this feeling he didn't just use me cus he was acting awkward about the whole thing after. he's one of those guyf that cares for me he's the only guyi have hung out with the most and he's the only that has boyght me food or has offereed. he even flirted with me when he had a gf i think he may just be scared to contact me cuz he thoug was awkward what do u think cuz he enjoed the bj
Why would a guy ignore me after having a sexual encounter with me?
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