In my limited experience with him, I've found Inigo-kun to be a very warm, sweet person. He seems to be very effusive with kind words, and genuine about them as well. That's a good thing, in my books! But it does make it a little more difficult to discern intent.
Given your history together, though, I would say this is a good sign. He clearly cares about you a great deal, in any capacity.
In my experience, it's best not to look a gift horse in the mouth. If someone delights in seeing you, don't question it too much. Simply enjoy the feeling of your presence bringing someone joy.
Now, all that said... The most important thing of all is this:
no subject
Given your history together, though, I would say this is a good sign. He clearly cares about you a great deal, in any capacity.
In my experience, it's best not to look a gift horse in the mouth. If someone delights in seeing you, don't question it too much. Simply enjoy the feeling of your presence bringing someone joy.
Now, all that said... The most important thing of all is this:
Does BB-san WANT it to be a date?