I can't speak to your aspie, but when I feel like I have been abandoned, I walk away and call it done. In this situation, if I were him and expected you to make contact and you didn't, I wouldn't try, so that would be it. Thus, for what it is worth, in my view if you do want to try again, you'll have to be the one to reach out.
I also can't speak to his behaviour because that would not be how I would behave in that situation at all. But, there are some perfectly reasonable explanations (in the context of the world of aspies) for his behaviour which you could really not possibly know about. It is possible, for example that he was suffering an aspie episode such as a shutdown or meltdown, possibly resulting from anxiety or stress related to the day's plans, or for some totally unrelated reason, and that as a result he was simply not under any degree of personal control.
It is understandable that you would see this behaviour as heartless or rude, and there is nothing to say that it wasn't both those things and worse, but at the same time, as has been said many times here in similar circumstances, you can't really judge what is happening across the neurological divide that separates you and him. Indeed, it is easy to misjudge actions, motives and reasoning, and draw conclusions which are not an accurate reflection of the reality of situations.
However, as much as it is very possible for there to be a very reasonable explanation for his actions, you would still have to decide for yourself is if this is acceptable to you. Over time, I think it is very possible for this type of relationship to work, and work well, you have to be able to find enough common ground that you can communicate your separate and joint needs and intentions. In a situation such as this, where he seems very reticent to talk, that would be quite hard to achieve.
Ultimately, it takes two to make a relationship, and that means that it isn't just you who needs to turn up, he does too. You can try and reach out to him again and see if he reacts, but in the end you can't make him participate and could find yourself in the same situation again. If you do try and contact him, it would be best to be non-judgemental but very literal and direct about what you want, because he won't be able to guess or interpret what you mean. Also, don't push him into trying to discuss subjects he is hesitant to discuss, because that will just make him defensive and resistant. It takes time for sensitive subjects to be OK and open for discussion in almost any relationship.