People taking advantage

There’s this guy that likes me and he really likes to give. Sometimes I tell him I’m okay and he still push his gifts onto me. He’s really nice and very giving. However I notice that he not only try to give me things but other people as well and people take advantage of him. one time on Snapchat I saw him bought like 3 iPhones for some guys, then he also bought a TV for this guy and I’m sure there’s a lot more I don’t know about. He’s constantly giving people things but they never seem to do the same for him or even try. His birthday is coming up I ask him if he will be celebrating with friends and he told me that he usually celebrate his birthday by himself or he doesn’t get anything. My jaw dropped because he’s constantly giving to people who don’t give a shit about him. Today he’s telling me this guy recently came to live in the U.S and he gave the guy his social security card and work authorization to find employment because the guy begged him. He also claim this guy is his friend but they all seem like leeches to me. Now he’s saying the guy lost his social security card and everything he gave him. The guy also said he lost his wallet so that means the guy will be asking him for money in the future. He also said he open up a bank account for the guy. So he’s been depositing money and all that for the guy and he’s not that close with the guy he did all this just because he felt like helping him. It seems like other people know he’s like this so they always seem to go to him whenever they want something and he doesn’t hesitate to give them. What are your thoughts on this ?