<human>: Can you condense the text into a few key points?

I started seeing this guy a few weeks ago. First date went really well. Saw him again a couple of days later for a quick lunch and then the next day I went round to his to chill. I met his roommates and got on with them. Ended up staying over and we fooled around a bit. 

A few days later I went round to his again and we had food and some drinks. I stayed over again, we had sex a couple of times (which was great) and he was really sweet and affectionate with me.

That was the last time I saw him. He was keen to see me a couple of days later but he ended up getting sick and apologized for cancelling. No biggie. He texted me a day later asking how I was but ever since then he got really slow at replying to texts (whereas before he'd been pretty keen and so had I.. I hate the whole "better wait 5 hours to reply so I don't look too interested" game, so annoying.. but anyway).

Last week I asked him if he fancied hanging out at the weekend, he was up for it and we agreed on doing something Saturday. Text convo continued through the week but still much slower than before and then the last text I sent on the Friday got no reply.

I waited to see if he'd get in touch on Saturday about meeting up but heard nothing. Maybe I should have texted him but I thought since the texting had been slow and I'd been the last one to initiate contact I'd leave him be.

It's been over a week since then and still nothing. I'm pretty gutted cos I really liked this guy and he gave the impression he felt the same way. It's doing my head in wondering what changed.

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Should I just take the hint and forget him?
Would it be weird to send him another text this late?
<bot>: Dating a guy who seemed really keen. Haven't heard from him in over a week. Would it be weird to text him at this point?