Search Results: expect sex to last

I met this guy on Tinder. I let him know I am not interested in one night stands, he was ok with it. I live in EU, he is from USA & works in military. He is stationed in one of the EU countries close by (3 hour drive).
Chatting was nice, he is interesting. He came to my city to meet me. Complete gentleman. We had a great time. Things got hot, we ended up at my place having the most amazing sex ever. He slept over, was really caring, cuddled a lot. He stated many times he likes me a lot and wants to keep seeing me. Next day we spent the whole afternoon and night together again. He was very affectionate and sweet. He said he wants coming back again and continue dating me. Than he had to go back (work).

We kept in touch. He texted me every day, asking how I am. But only once per day and rarely anything more than "Good day, how are you". Couple of times he suggested some activities we should do sometimes (but not setting a date on it). He doesn't initiate any deeper conversation. He stopped writing adjectives like "sweetheart, beautiful...".
It is been a week now since we last saw each other and he had not asked me out again. Yesterday I wrote him I had a bad day and he never replied (was expecting some compassion). I also noticed he changed his Tinder bio yesterday. :(
I know we are not exclusive, cause it is too early for this. But he seemed interested in me (a lot of statements expressing his affection for me). Now I am not sure if I was overwhelmed by his charm (guys from my country never behave that nice). Or maybe just dating styles are different in USA and in my country? Dont know.

Should I ask him when we can see each other? Should let him initiate a date? Should I only hint I wanna see him again (something like "waking up next to you was so nice. would like to see that again).
Should I just stop talking to him as communication seems fizzling out slowly? (I dont understand why though).
Should I just be straightforward and call him out? Or is it too early?