That address belongs to a wallet from coins.ph - Philippine crypto exchange. So he sends coins every week to exchange for cash.
I understand that concept, but does coins.ph only give out one address for many individual members to use?
No. No exchanges give the same address to several users. Whenever you create an account and verify. You will be able to generate an address. On Some exchanges, You don't have to generate an address. It will be rendered once you create an account. I might be wrong, Nah?
I believe this is his account on coins.ph and that's why he sent his coins every week. If it's not your exchange wallet, You won't do that every week. You may sell coins anywhere else at least once.
Snip
At first, I thought, why not ask him? But he didn't reply. So, it raises suspicion, and I am here with a Question mark from the beginning of this thread. So, What's wrong? If others think this is insufficient to prove the connection, it is absurd to report it to Mods.