met a guy (24) online, chatted a few times..we set up a first date which he cancelled 30 min before because he couldnt leave work, but he set up another date. this date was great, had a few drinks at my place, talked for hours, which eventually led us to kiss, cuddle and play around with each other (clothes on..well at least the relevant ones

) with each other for another couple of hours.
he told me that he will leave to australia for a 6 week backpack holiday in 2 days and was looking forward to it, because he is crazy about travelling, getting to meet new people etc.
due to the long absence, i told him that i would be out clubbing with friends tomorrow night and that he could come along..he said that his sibblings were visiting him at the moment, but that he thinks he should be free after midnight, so that it could work.
so i text him that/the next evening, he responds that he is still with his relatives and will let me know whether he can make it. eventually at around 1:00 he texts that he couldnt make it, wishes me fun should i still be out right now and that we will see each other upon his return...i however didnt respond as i didnt have reception at the club and received the text message at around 3:00.
that was the morning of the day of his departure, he is in australia and he hasnt initiated contact since. i am pretty sure he will get in touch upon arrival but here is the "issue":
i am not looking for a mere sexual encounter, more into getting to know him to see if he is "relationship material". i know that the best way to attract someone is to play it loose and just have fun and then see what happens. my problem however is the fact that we had a really long evening that went more than well and i have an issue with the fact that he hasnt gotten in touch during the vacation.
i somewhat dont like the idea of someone coming back and then all of a sudden getting in touch again after that long of a time, as it comes across as oppertunistic and doesnt convey much interest...at least thats how i feel about it..
am i being too strict or would you agree that i am right in my assessment of a low interest level?