Guy I've been seeing gave me this response when we had the talk. Advice?

So I've been seeing this guy since Feb/March. 33M, 24F. When we first met, he told me that he is looking to settle down and wants something serious. Everything has been great, we get along well. I've met his friends and they apparently really like me. Haven't been able to meet his parents as they live in another state. We've told each other before that we really like each other and he asked me a few weeks ago to clarify that I'm not seeing anyone else. Every time we catch up, he's always like 'it's been a while since we've seen each other' indicating that he would like to see me more. He also says to me sometimes 'I was talking to *name*, how long have we been seeing each other for again?' He's a med student - he's been busy lately with rotations and studying for an exam in the next few months. I get this, I'm in college as well. We saw each other at the weekend and went to a gathering with his friends. We normally see each other once or twice a week due to our schedules, mainly on the weekends though.
When I left on that Sunday, his texting was a bit short but I knew he had things coming up for the week. He told me that they put a group photo up of everyone in some group, so I asked for him to send it to me and he didn't. I didn't hear from him yesterday.
We've texted about every day since we first met and for the first time yesterday, he didn't text me. I was getting a bit concerned there was something even wrong with him so I called. I asked if everything was okay and he apologised saying he was busy. He kind of went onto saying maybe we have different expectations of how many times we should text each other, which I disagreed. I was just a bit bummed he didn't text as it was out of his character too.

I've been meaning to have the talk with him about 'what we are' and where we see things going. He said that he dates in the hopes of a long term arrangement.
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He said that he really loves being in my company and said there are things that he sees we could be compatible however then said there are a few things he's not so sure about (he's an overthinker), I asked what and he said 'just to see if we're compatible with boring stuff' that often occurs when you get married. I told him that it's hard for him to make that judgement as we only see each other a few times a week.
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Which I found a bit strange because when we're doing very mundane things together, he is always saying how great it feels to be with me at that moment. He almost indicated that he can't tell at this stage. It was a bit late when we had this conversation so he almost wanted to get off the phone (I get it, he had to be up at 7). He also implied it's maybe too early to tell. I told him that I felt a bit unhopeful in a way and that his response seemed negative and he said it's not.
Guy I've been seeing gave me this response when we had the talk. Advice?
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