Just as others have said the way your WhatsApp messages appeared made it look like you were the one that gifted the person at the other end of the conversation, and besides the chat image you provided tells us nothing because in less than 20 minutes a chat like you provided can be created.

Here is what I mean:


As you can see I can a even it's very easy to form chat, if you want I can also create the other chats you provided above. I am also change the date and time if you want me to...


I'd say he only just made up those story to make it more convincing, I'm sure if this thread continue and more evidence are being added he'll definitely let the cat out of the bag.