Again, I feel like the worst-case-scenario poster, but do keep in mind that all (or at least MOST) babies are nice. Certain behaviors that seem innocent now could easily become sexually stimulating when hormones kick in. I would try not to start anything I couldn't sustain into adulthood (within reason..)
Petting under the wings and cuddles are frequently misunderstood by birds who want nothing more than to mate..for life...or close to it...
For example: As a kid under the age of 4, I frequently took baths with my cousin (who was a boy---I am a girl)...Thought nothing of it (Didn't even notice that he was a boy)..Then when we were 4, our parents said we couldn't do that anymore. I remember being really sad and not understanding why (because there was nothing weird/sexual about it to EITHER OF US)...
That having been said, it would have been super-weird had this continued into pre-puberty/puberty...They made the call super early because they didn't want it to be awkward and they were right to do so. Do you see what I mean?
I am happy that you are happy and that your bird is happy.
I just hate to think of a sexually frustrated teen turning on his dysfunctional "first love" when things get messy...SOOOO enjoy, but keep that in mind. I always feel like the non-supportive kill-joy lol. I swear, that isn't my intention.