She insists he does not like like her. I think it sounds like he does, plus I think there's a high base rate of guys who have crushes on their online female friends. I think their interactions sound quite cutesy. She often calls him adorable. She recently typed "brb" in chat and he responded "NOOOOOO".

He has bought a necklace she told him to get.

I can add more examples as they come up.