Was I bad in bed? Did I do something wrong ? He’s acting weird now

I like his man, and from what I heard he likes me we work construction together. He’s 20 and I’m 19 well i stayed at his house and he kissed me and then I got on top of him then we ending up sleeping together twice that day/night. Woke up he was still cuddling me and kissed me before I left. Texted me asking if I made it home alright. BUT then at work he had told a worker we had slept together, he’s acting weird now. So it makes me act weird but yet still work. In bed I did all the work during sex. first time he just laid there he finished quick i gave him oral and rode him. 2nd time he got more into it but at work now it’s just seems weird..... WAS I bad in bed ? Does he not like me anymore ... ? Makes me think I was horrible... I know it was a fling I think he likes me but idk he told my dad and our boss that he does. But that was before we slept together..... I know this is a lot to read .