Third date two weeks later, what should I make of this.?

So I met this guy online about a month ago. We had a great first date which ended with us sleeping together. Then a few days later he asked me on another date which would be a week later. We spend most of the day together out and about in the sun and then I slept over. He told me right after the first date he was doing a course for the nextv three weeks while working full time which would be taking up most of his time for the next three weeks. But after the first date he managed to see me on the Sunday after his school. The weird part is after our second date he didint really contact me and then I didn't hear from him in two weeks I figured he wasent interested. Then all of a sudden he's asked to see me again this weekend on fri. He sais he was sorry for going MIA and that he was consumed with working and school doing 80 hour weeks. Should I give this guy a shot or are these just excuses...
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There was also no doubt about him being into me during the date. Gave a lot of affection, held doors and complimented me. Justwondering if guys would drop off the map when really into someone they just met when they are busy.
Third date two weeks later, what should I make of this.?
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