Help! a guy was really into me and now it feels he is putting me in a queue. I don’t know what happened? ?

I went on a first date with a (Greek) guy. He was really into me. He was future planning. He wanted me to come to Athens. He was talking about all the things we could do for future dates. He was very affectionate emotionally and physically. Which I was into. He wanted me to come back with him but I didn’t want to. I said I want a serious relationship which he didn’t say anything back. He wanted our second date soon. We met the next day. He was talking about Greek weddings and what they were like. I thought he seemed serious. We did sleep with each other that night. He has texted me all week nice things and checking in. Saturday morning he texted what I was up to. I said that I was just about to go to the gym and I wanted to see him. He replied with ‘I’m resting this morning we can see each other next week’. I know he has been busy at work. But It felt like he is seeing other women.
I replied ‘oh it’s like that is it. Well it would be nice to meet but I think it is a maybe meet next week now’ I am upset because I said I wanted serious and I thought he was feeling it too but now I feel used. What do you think he is doing? Was I in the right as I know we have only known each other a week. He hasn’t replied to me

Help! a guy was really into me and now it feels he is putting me in a queue. I don’t know what happened? ?
Post Opinion